A382365 Expansion of 1/( 1 - 4 * Sum_{k>=0} x^(2^k) / (1 - x^(2^k)) )^(1/2).

1, 2, 10, 46, 232, 1174, 6078, 31786, 167836, 892258, 4770466, 25622286, 138146540, 747253022, 4053224974, 22038282338, 120079277626, 655486778654, 3584062901182, 19625809294386, 107610733877720, 590751275348362, 3246588926918074, 17860031073624694

Offset: 0

Author

Seiichi Manyama, Mar 22 2025

Keywords

• nonn

Crossrefs

Cf. A327736, A382366.

Cf. A382187.

Formula

G.f. A(x) satisfies A(x) = 1/( 1/A(x^2)^2 - 4*x/(1-x) )^(1/2).