A382334 Expansion of ( 1 + 9 * Sum_{k>=0} x^(2^k)/(1 - x^(2^k)) )^(1/3).

1, 3, -3, 12, -45, 210, -1038, 5331, -28068, 150645, -820713, 4526157, -25217451, 141722985, -802455807, 4573197111, -26211368118, 150988107936, -873651133218, 5075417681184, -29591720994384, 173094835970280, -1015510421231184, 5973910500301608, -35229684687254898

Offset: 0

Author

Seiichi Manyama, Mar 22 2025

Keywords

• sign
• easy

Crossrefs

Cf. A001511, A382333.

Cf. A223143, A382336.

Formula

G.f. A(x) satisfies A(x) = ( A(x^2)^3 + 9*x/(1-x) )^(1/3).