A338481 Least number of octagonal numbers needed to represent n.

1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7, 8, 2, 3, 4, 5, 6, 1, 2, 3, 3, 4, 5, 6, 7, 2, 3, 4, 4, 5, 6, 7, 8, 3, 4, 5, 1, 2, 2, 3, 4, 4, 5, 6, 2, 3, 3, 4, 5, 5, 6, 7, 3, 4, 4, 5, 6, 2, 3, 3, 4, 1, 2, 3, 4, 3, 4, 4, 5, 2, 3, 4, 5, 4, 5, 5, 2, 3, 3, 4, 4, 5, 2, 3, 3, 4, 4, 5, 5, 6, 3, 4, 1, 2, 3, 4, 5, 3

Offset: 1

Author

Ilya Gutkovskiy, Oct 29 2020

Keywords

• nonn

Links

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

Crossrefs

Cf. A000567, A002828, A061336, A100878, A338479, A338480.