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A278399 G.f.: Re((i; x)_inf), where (a; q)_inf is the q-Pochhammer symbol, i = sqrt(-1). 12
1, -1, -1, -2, -2, -3, -2, -3, -2, -2, 0, 0, 3, 4, 8, 9, 14, 16, 22, 24, 30, 32, 39, 40, 46, 46, 51, 48, 52, 46, 46, 36, 32, 16, 8, -15, -30, -60, -82, -122, -151, -200, -238, -296, -342, -412, -464, -542, -602, -686, -750, -841, -904, -996, -1058, -1146, -1198 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

The q-Pochhammer symbol (a; q)_inf = Product_{k>=0} (1 - a*q^k).

LINKS

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

Eric Weisstein's World of Mathematics, q-Pochhammer Symbol.

FORMULA

(i; x)_inf is the g.f. for a(n) + i*A278400(n).

MATHEMATICA

Re[(QPochhammer[I, x] + O[x]^60)[[3]]]

CROSSREFS

Cf. A278400, A278401, A278402, A278420.

Sequence in context: A261653 A083900 A113517 * A225416 A276862 A295784

Adjacent sequences:  A278396 A278397 A278398 * A278400 A278401 A278402

KEYWORD

sign

AUTHOR

Vladimir Reshetnikov, Nov 20 2016

STATUS

approved

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Last modified October 18 08:04 EDT 2019. Contains 328146 sequences. (Running on oeis4.)