A338496 Least number of octagonal pyramidal numbers needed to represent n.

1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 9, 2, 3, 4, 5, 6, 7, 8, 9, 10, 3, 4, 5, 1, 2, 3, 4, 5, 6, 4, 5, 6, 2, 3, 4, 5, 6, 7, 5, 6, 7, 3, 4, 5, 6, 7, 8, 6, 7, 8, 4, 5, 6, 2, 3, 4, 5, 6, 7, 5, 6, 7, 3, 1, 2, 3, 4, 5, 6, 7, 8, 4, 2, 3, 4, 5, 6, 7, 8, 9, 5, 3, 4, 3, 4, 5, 6, 7, 8, 6, 4, 5, 4, 2, 3

Offset: 1

Author

Ilya Gutkovskiy, Oct 31 2020

Keywords

• nonn

Links

• Eric Weisstein's World of Mathematics, Pyramidal Number
• Index to sequences related to pyramidal numbers

Crossrefs

Cf. A002414, A104246, A338458, A338481, A338493, A338494, A338495.