A350207 a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero n-gonal numbers in exactly n ways, or 0 if no such integer exists.

25, 65, 144, 305, 456, 622, 731, 1006, 1434, 1499, 1711, 1806, 2446, 2742, 3001, 3051, 3544, 3699, 3962, 4345, 5362, 5039, 5756, 5712, 6251, 6655, 7399, 7698, 7591, 8304, 8673, 9241, 9362, 9299, 10312, 10606, 11121, 10736, 12113, 12737, 12934

Offset: 3

Author

Ilya Gutkovskiy, Dec 19 2021

Keywords

• nonn

Links

• Eric Weisstein's World of Mathematics, Polygonal Number

Crossrefs

Cf. A057145, A097563, A274046, A350196, A350197, A350198, A350199, A350209, A350210.