A343777 a(n) is the least integer that can be expressed as the sum of one or more consecutive nonzero n-gonal numbers in exactly n ways.

2180, 554503705

Offset

3,1

Links

Table of n, a(n) for n=3..4.

Eric Weisstein's World of Mathematics, Polygonal Number

Index to sequences related to polygonal numbers

Crossrefs

Cf. A298467, A334007, A334008, A334010, A334011, A334012, A338105.

Sequence in context: A281562 A254417 A254424 * A250628 A234733 A371474

Adjacent sequences: A343774 A343775 A343776 * A343778 A343779 A343780

Keyword

nonn,bref,hard,more

Author

Ilya Gutkovskiy, Apr 30 2021

Status

approved