The term
figurate number is used by different writers for members of different sets of numbers, generalizing from triangular numbers to
Kaynak: Figurate numberA tetrahedral number, or triangular pyramidal number, is a
figurate number that represents a pyramid with a triangular base and three
Kaynak: Tetrahedral numberThe centered polygonal numbers are a class of series of
figurate number s, each formed by a central dot, surrounded by polygonal layers with
Kaynak: Centered polygonal numberIn mathematics , a pyramid number, or square pyramidal number, is a
figurate number that represents the number of stacked spheres in a
Kaynak: Square pyramidal numberIn elementary number theory , a centered square number is a centered
figurate number that gives the number of dots in a square with a dot
Kaynak: Centered square numberA pentagonal number is a
figurate number that extends the concept of triangular and square number s to the pentagon , but, unlike the
Kaynak: Pentagonal numberA hexagonal number is a
figurate number . The n th hexagonal number will be the number of points in a hexagon with n regularly spaced
Kaynak: Hexagonal numberIn number theory , an octahedral number is a
figurate number that represents the number of spheres in an octahedron formed from close-
Kaynak: Octahedral numberA centered hexagonal number, or hex number, is a centered
figurate number that represents a hexagon with a dot in the center and all
Kaynak: Centered hexagonal numberA centered octagonal number is a centered
figurate number that represents an octagon with a dot in the center and all other dots
Kaynak: Centered octagonal numberA decagonal number is a
figurate number that represents a decagon . The n-th decagonal number is given by the formula: D_n 4n^2 - 3n.
Kaynak: Decagonal numberA pentagonal pyramidal number is a
figurate number that represents the number of objects in a pyramid with a pentagonal base The n th
Kaynak: Pentagonal pyramidal numberA centered heptagonal number is a centered
figurate number that represents a heptagon with a dot in the center and all other dots
Kaynak: Centered heptagonal numberA heptagonal number is a
figurate number that represents a heptagon . The n-th heptagonal number is given by the formula : frac 5n^2 - 3
Kaynak: Heptagonal numberA centered (or centred) triangular number is a centered
figurate number that represents a triangle with a dot in the center and all other
Kaynak: Centered triangular numberA star number is a centered
figurate number that represents a centered hexagram (six-pointed star), such as the one that Chinese
Kaynak: Star numberA centered pentagonal number is a centered
figurate number that represents a pentagon with a dot in the center and all other dots
Kaynak: Centered pentagonal numberAn octagonal number is a
figurate number that represents an octagon . The octagonal number for n is given by the formula 3 n 2 - 2 n,
Kaynak: Octagonal number