A292117 - OEIS

A292117

Coefficients of a power series f(q) with coefficients +1 or -1 such that Product_{m >= 1} f(q^(2m-1)) = Sum_{m = -oo..oo} q^(m(3m-1)/2).

1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, -1, -1, -1, 1, 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, 1, -1, -1, -1, 1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, -1, -1, -1, 1, 1, 1, 1, 1, 1, -1, -1, -1, 1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, -1

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OFFSET

COMMENTS

More than the usual number of terms are given because there are many similar sequences in the OEIS.

LINKS

Table of n, a(n) for n=0..84.

George E. Andrews and David Newman, Binary Representations and Theta Functions, 2017.

CROSSREFS

Cf. A292118.

Sequence in context: A181432 A165326 A143621 * A098417 A143622 A246016

Adjacent sequences: A292114 A292115 A292116 * A292118 A292119 A292120

KEYWORD

sign

AUTHOR

N. J. A. Sloane, Sep 09 2017

STATUS

approved