A321336 Expansion of Product_{k>=0} (1 - x^(2^k))^(2^(k+1)).

1, -2, -3, 8, -6, 4, 26, -56, -7, 70, -51, 32, 120, -272, -200, 672, -182, -308, 1026, -1744, -660, 3064, -916, -1232, 2466, -3700, -3990, 11680, -1416, -8848, 13752, -18656, -8503, 35662, -14331, -7000, 27122, -47244, -29870, 106984, -25895, -55194, 140173, -225152

Offset: 0

Author

Seiichi Manyama, Nov 05 2018

Keywords

• sign

Crossrefs

Cf. A073708, A321327, A321335.

Formula

Equals the self-convolution of A321327.

G.f.: A(x) satisfies A(x) = ((1 - x) * A(x^2))^2, with A(0) = 1.

a(n) = A321327(2*n) for n >= 0.