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

1,2

Links

Table of n, a(n) for n=1..101.

Eric Weisstein's World of Mathematics, Octagonal Number

Index to sequences related to polygonal numbers

Crossrefs

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

Sequence in context: A338881 A053843 A010886 * A338492 A338458 A002376

Adjacent sequences: A338478 A338479 A338480 * A338482 A338483 A338484

Keyword

nonn

Author

Ilya Gutkovskiy, Oct 29 2020

Status

approved