Hexagonal pyramidal Number

hexagonal pyramidal Nombre is a Nombre illustrated which is represented by a Pyramide whose base is a regular hexagon.

Pyramidal number hexagonal D3

Any number of row N of this class is the sum of N first hexagonal. The general term is N (N + 1) (4n - 1) /6. Smallest pyramidal hexagonal are:

1, 7, 22, 50, 95, 161, 252, 372, 525, 715, 946, 1222,1547,1925,2360,2856,3417,4047,4750

Pyramidal number hexagonal D4

Any number of row N of this class is the sum of N first pyramidal D3 hexagonal. The general term is N2 (N + 1) (N + 2) /6. The 10 smaller pyramidal D4 hexagonal are:

1, 8, 30, 80, 175, 336, 588, 960, 1485 and 2200.

MAPLE: , n=0..20); # 8,30,80,175,336,588,960,1485,2200,3146,4368,5915,7840,10200,13056,16473,20520,25270,30800,37191 ''

Pyramidal number hexagonal D5

Any number of row N of this class is the sum of N first pyramidal D4 hexagonal. The general term of row N is N (N + 1) (N + 2) (N + 3) (4n + 1) /120. The 10 smaller pyramidal D5 hexagonal are:

1, 9, 39, 119, 294, 630, 1218,2178,3663 and 5863.

External bond

hexagonal pyramidal Number on recreomath
pyramidal Number hexagonal D3 on the OEIS

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