A363781 a(n) = [x^n] 1/(Sum_{k>=0} x^(k^3))^n.
1, -1, 3, -10, 35, -126, 462, -1716, 6427, -24220, 91718, -348712, 1330238, -5088916, 19515660, -75000600, 288772795, -1113688667, 4301387580, -16635049690, 64410064110, -249659926890, 968651123520, -3761601535620, 14619516646150, -56861702382576
Offset: 0