A012957 cosh(tan(x)+arcsin(x))=1+4/2!*x^2+40/4!*x^4+934/6!*x^6+39064/8!*x^8...

1, 4, 40, 934, 39064, 2572314, 247234332, 33003190406, 5905698391952, 1378247307547506, 409930747848171812, 152227803027302287806, 69261955789532321824024, 37950380064596445532181866

Offset

0,2

Links

Table of n, a(n) for n=0..13.

Mathematica

With[{nn=30}, Take[CoefficientList[Series[Cosh[Tan[x]+ArcSin[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Apr 04 2015 *)

Crossrefs

Sequence in context: A117251 A220404 A211040 * A012977 A321526 A361057

Adjacent sequences: A012954 A012955 A012956 * A012958 A012959 A012960

Keyword

nonn

Author

Patrick Demichel (patrick.demichel(AT)hp.com)

Status

approved