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A013131 Expansion of e.g.f.: exp(tanh(x)+arcsin(x))=1+2*x+4/2!*x^2+7/3!*x^3+8/4!*x^4+17/5!*x^5... 0
1, 2, 4, 7, 8, 17, 214, 1761, 8632, 38969, 381754, 5371821, 56522540, 533244077, 6087452310, 95701880241, 1458087413200, 21713687902033, 333863833250482, 6101409790911765, 114840891055289940, 2263678163011472213 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..21.

MATHEMATICA

With[{nn=30}, CoefficientList[Series[Exp[Tanh[x]+ArcSin[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Mar 04 2015 *)

CROSSREFS

Sequence in context: A337744 A045594 A013056 * A293759 A122979 A122980

Adjacent sequences:  A013128 A013129 A013130 * A013132 A013133 A013134

KEYWORD

nonn

AUTHOR

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

EXTENSIONS

Definition clarified by Harvey P. Dale, Mar 04 2015

STATUS

approved

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Last modified May 10 05:10 EDT 2021. Contains 343748 sequences. (Running on oeis4.)