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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.
4
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
3,1
LINKS
Eric Weisstein's World of Mathematics, Polygonal Number
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Dec 19 2021
STATUS
approved