A350209 a(n) is the smallest positive integer which can be represented as the sum of distinct centered n-gonal numbers in exactly n ways, or 0 if no such integer exists.

65, 151, 330, 316, 515, 645, 888, 824, 1017, 1348, 1474, 1614, 1655, 2006, 2233, 2255, 2779, 2805, 2882, 2865, 3364, 3653, 3930, 4035, 4325, 4765, 4675, 5016, 4904, 5446, 5913, 5990, 6061, 6954, 6850, 7681, 8313, 7846, 7591, 9035, 8736

Offset

3,1

Links

Table of n, a(n) for n=3..43.

Eric Weisstein's World of Mathematics, Centered Polygonal Number

Crossrefs

Cf. A101321, A350195, A350203, A350204, A350207, A350210.

Sequence in context: A121944 A044316 A044697 * A326157 A044397 A044778

Adjacent sequences: A350206 A350207 A350208 * A350210 A350211 A350212

Keyword

nonn

Author

Ilya Gutkovskiy, Dec 19 2021

Status

approved