A194087 G.f.: eta(q)*eta(q^4)*eta(q^16)*eta(q^64)*eta(q^256)*eta(q^1024)*..., where eta(q) = Product_{m=1..oo} (1 - q^m).

1, -1, -1, 0, -1, 2, 1, 1, -1, 0, 1, -1, -1, -1, 0, -2, 0, 1, 1, 1, 3, -3, -1, 0, 1, 1, -1, 2, 2, 0, -3, 2, -3, 2, 0, -2, -1, -1, -1, -1, -1, -1, 0, 0, 1, 2, 4, 2, 0, 0, 3, 1, -2, 0, 1, -5, 2, 0, -1, -2, -3, 1, 3, 0, 0, -3, 0, -1, 0, -1, -4, 2, 4, -1, -2, 3, 1, 1, -1, 3, 1, 0, -5, 0, -3, 8, 2, 3, -1, -3, 0, -3, -1, 0, 1

Offset: 0

Author

N. J. A. Sloane and Gary W. Adamson, Feb 18 2010, Aug 14 2011

Keywords

• sign

Comments

eta(q) = A(q)/A(q^4), where A(q) is the g.f. for this sequence (cf. A010815).

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A010815, A083650, A030189, A160832, A170925, A143374.