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 A013029 E.g.f. (in x^2) is arctan(sinh(x)+sin(x)) 0
 2, -16, 770, -92496, 20740610, -7474383376, 3950577954050, -2879011223666256, 2766724614020441090, -3389992164431254725136, 5158145935254382213801730, -9542165281823577542150984016 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Table of n, a(n) for n=0..11. MATHEMATICA Partition[CoefficientList[Series[ArcTan[Sinh[x] + Sin[x]], {x, 0, 23}], x]*Range[0, 23]!, 2][[All, 2]] PROG (PARI) x='x+O('x^33) /* That many terms */ v=Vec(serlaplace(atan(sin(x)+sinh(x)))); /* every second term is zero */ vector(#v\2, n, v[2*n-1]) /* show terms */ /* Joerg Arndt, Mar 16 2011 */ CROSSREFS Sequence in context: A005118 A108400 A186002 * A012915 A012920 A013088 Adjacent sequences: A013026 A013027 A013028 * A013030 A013031 A013032 KEYWORD sign AUTHOR Patrick Demichel (patrick.demichel(AT)hp.com) STATUS approved

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Last modified June 2 08:51 EDT 2023. Contains 363092 sequences. (Running on oeis4.)