A143374 G.f.: eta(q)*eta(q^3)*eta(q^9)*eta(q^27)*eta(q^81)*eta(q^243)*..., where eta(q) = Product((1-q^m), m=1..oo).

1, -1, -1, -1, 1, 2, -1, 2, 0, -1, 0, 0, 0, -2, -2, 2, -3, -1, 1, 2, 3, 4, 1, -3, 0, -2, 3, -4, 2, 0, -1, -1, -2, -1, 0, -2, -2, 2, 2, -1, 0, 5, -1, 5, 0, 2, -3, -3, -3, 1, 3, 2, 2, -2, 4, -6, -4, 2, -2, -1, 2, -6, 0, 8, -4, -3, 2, 5, 1, -6, 3, 6, -1, 1, -4, -10, 1, 2, -1, 2, -5, -2, 6, 13, 4, 1, -1, 2, 1, 4, -4, -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^3), 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, A173241, A194087.