A338479 Least number of hexagonal numbers needed to represent n.

1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 6, 2, 3, 4, 1, 2, 3, 3, 4, 5, 2, 3, 4, 4, 5, 6, 3, 1, 2, 2, 3, 4, 4, 2, 3, 3, 4, 5, 5, 3, 4, 4, 2, 3, 1, 2, 3, 4, 3, 4, 2, 3, 4, 5, 4, 2, 3, 3, 4, 2, 3, 3, 4, 4, 5, 1, 2, 3, 4, 5, 3, 2, 2, 3, 3, 4, 4, 3, 3, 4, 2, 3, 4, 3, 4, 4, 3, 3, 4, 2, 1, 2, 3, 2, 3, 3, 2, 3, 4, 3, 3

Offset: 1

Author

Ilya Gutkovskiy, Oct 29 2020

Keywords

• nonn

Links

• Eric Weisstein's World of Mathematics, Hexagonal Number
• Index to sequences related to polygonal numbers

Crossrefs

Cf. A000384, A002828, A061336, A100878, A234533, A338480, A338481.