A350198 a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero heptagonal numbers in exactly n ways, or 0 if no such integer exists.

1, 81, 189, 270, 343, 342, 456, 538, 557, 531, 651, 636, 676, 658, 723, 804, 784, 777, 770, 825, 844, 865, 890, 975, 960, 941, 966, 983, 959, 1030, 1040, 1012, 1080, 1053, 1039, 1119, 1046, 1078, 1079, 1064, 1072, 1173, 1071, 1180, 1152, 1193, 1194, 1226, 1220, 1247

Offset

1,2

Links

Table of n, a(n) for n=1..50.

Eric Weisstein's World of Mathematics, Heptagonal Number

Crossrefs

Cf. A000566, A097563, A274046, A279280, A350196, A350197, A350199.

Sequence in context: A183995 A044413 A044794 * A236884 A236728 A236877

Adjacent sequences: A350195 A350196 A350197 * A350199 A350200 A350201

Keyword

nonn

Author

Ilya Gutkovskiy, Dec 19 2021

Status

approved