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A256401 Numerators of coefficients of expansion of exp(-Sum_{k=0..oo} x^(2^k)/2^k ) in powers of x. 3
1, -1, 0, 1, -1, 1, 1, -5, -8, 43, -74, -559, 697, -13232, -30727, 450991, -5519014, 8250311, 59081053, -2113948301, 19352683736, -113555728681, -4421555920, 10403170713454, 4947541575776, -1037548987977353, 4668788227294924, 20521746955820009 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

LINKS

Hiroaki Yamanouchi, Table of n, a(n) for n = 0..100

Koda, Tatsuhiko; Sato, Masaki; Takegahara, Yugen; 2-adic properties for the numbers of involutions in the alternating groups, J. Algebra Appl. 14 (2015), no. 4, 1550052 (21 pages). See Lemma 2.1.

CROSSREFS

For denominators see A256402. Cf. A256400.

Sequence in context: A073930 A130223 A126750 * A109292 A275571 A192379

Adjacent sequences:  A256398 A256399 A256400 * A256402 A256403 A256404

KEYWORD

sign,frac

AUTHOR

N. J. A. Sloane, Mar 29 2015

EXTENSIONS

a(18)-a(27) from Hiroaki Yamanouchi, Mar 30 2015

STATUS

approved

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Last modified November 27 04:21 EST 2020. Contains 338677 sequences. (Running on oeis4.)