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A030215 Expansion of eta(q^9)*eta(q^15). 6
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, -1, 0, 0, -1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,95
LINKS
M. Koike, On McKay's conjecture, Nagoya Math. J., 95 (1984), 85-89.
FORMULA
Expansion of x * Product_{k>=1} (1 - x^(9*k)) * (1 - x^(15*k)). - Seiichi Manyama, Oct 18 2016
MATHEMATICA
eta = QPochhammer;
CoefficientList[q eta[q^9] eta[q^15] + O[q]^100, q] (* Jean-François Alcover, Feb 21 2021 *)
CROSSREFS
Cf. Expansion of eta(q^k)*eta(q^(24 - k)): A030199 (k=1), A030201 (k=3), A030213 (k=5), A030214 (k=7), this sequence (k=9), A030216 (k=10), A030217 (k=11).
Sequence in context: A355452 A130638 A030217 * A283020 A098108 A363712
KEYWORD
sign
AUTHOR
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)