| DATA
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1, -2, -8, 16, 20, -36, 0, -32, -75, 220, 104, -128, -44, -392, 0, 256, 232, 474, -536, 320, 168, -1124, 0, -576, 245, 852, 1248, 0, -1668, 2040, 0, -512, -1368, -2632, -560, -1200, 4756, 1428, 0, 3520, 656, -3528, -3224, 1664, -4740, 2168, 0, -2048, 1449
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| FORMULA
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Expansion of q * f(-q)^2 * f(-q^2)^7 * f(-q^4)^2 in powers of q where f() is a Ramanujan theta function.
Expansion of eta(q)^2 * eta(q^2)^7 * eta(q^4)^2 in powers of q.
Euler transform of period 4 sequence [ -2, -9, -2, -11, ...].
G.f. is a period 1 Fourier series which satisfies f(-1 / (4 t)) = 2^(11/2) (t/i)^(11/2) f(t) where q = exp(2 Pi i t).
G.f.: x * Product_{k>0} (1 - x^k)^2 * (1 - x^(2*k))^7 * (1 - x^(4*k))^2.
a(8*n + 7) = 0. a(4*n) = 16 * a(n).
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