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A012087
Expansion of e.g.f.: exp(arcsin(arctan(x)))=1+x+1/2!*x^2-3/4!*x^4+4/5!*x^5+69/6!*x^6...
0
1, 1, 1, 0, -3, 4, 69, -32, -2503, 1936, 177481, -67328, -18539595, 4140096, 2813939725, 353591808, -573509386895, -262064131840, 152349815266705, 130347373404160, -50966873710838675, -65058714844462080
OFFSET
0,5
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Exp[ArcSin[ArcTan[x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, May 27 2018 *)
CROSSREFS
Sequence in context: A060356 A052323 A356292 * A012194 A318208 A341851
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Definition clarified by Harvey P. Dale, May 27 2018
STATUS
approved