A360215 a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero icosahedral numbers in exactly n ways, or -1 if no such integer exists.

1, 1383, 4157, 6548, 8633, 9884, 12503, 12920, 15357, 15812, 18146, 18126, 19755, 20895, 22106, 23229, 23246, 23685, 22118, 25142, 25884, 27894, 29448, 28149, 29703, 30285, 31914, 30966, 34007, 34380, 34390, 35082, 35894, 34389, 36891, 37035, 37425, 35907, 35895, 38856

Offset

1,2

Links

Table of n, a(n) for n=1..40.

Wikipedia, Icosahedral number

Crossrefs

Cf. A006564, A275154, A350205, A360214, A360216.

Sequence in context: A134670 A250367 A092128 * A156410 A156413 A029819

Adjacent sequences: A360212 A360213 A360214 * A360216 A360217 A360218

Keyword

nonn

Author

Ilya Gutkovskiy, Jan 30 2023

Status

approved