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A256052 Coefficients of mock modular form H_2^(4) (divided by 2). 1
8, 24, 56, 112, 216, 392, 672, 1128, 1840, 2912, 4536, 6936, 10416, 15456, 22632, 32728, 46872, 66472, 93400, 130200, 180104, 247312, 337392, 457408, 616392, 826104, 1101352, 1460928, 1928880, 2535280, 3318000, 4324824, 5615224, 7263424, 9362088, 12025904, 15396856, 19650792 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..2500

Miranda C. N. Cheng, John F. R. Duncan, Jeffrey A. Harvey, Umbral Moonshine, arXiv:1204.2779 [math.RT], 2012-2013.

MATHEMATICA

nmax = 50; a:= 8*CoefficientList[Series[q*Sum[q^(k - 1)*(Product[1 + q^j, {j, 1, 2 k - 2}])/(Product[1 - q^(2 j - 1), {j, 1, k}])^2, {k, 0, nmax}], {q, 0, 150}], q]; Table[a[[n]], {n, 1, 100}] (* G. C. Greubel, Jul 27 2018 *)

CROSSREFS

Equals 8 times A256209.

Sequence in context: A152134 A279018 A011925 * A159741 A302489 A099041

Adjacent sequences:  A256049 A256050 A256051 * A256053 A256054 A256055

KEYWORD

nonn,changed

AUTHOR

N. J. A. Sloane, Mar 24 2015

STATUS

approved

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Last modified February 23 08:00 EST 2019. Contains 320420 sequences. (Running on oeis4.)