A338481 - OEIS

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A338481

Least number of octagonal numbers needed to represent n.

3

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

(list; graph; refs; listen; history; text; internal format)

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