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A012910
E.g.f.: sech(arcsin(x)+log(x+1))=1-4/2!*x^2+6/3!*x^3+53/4!*x^4-310/5!*x^5...
0
1, 0, -4, 6, 53, -310, -1180, 21945, -3175, -2137140, 11656250, 251460275, -3687426175, -28037901450, 1119181111100, -870863209125, -357796134031375, 3533382651695000, 115201679883533750
OFFSET
0,3
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Sech[ArcSin[x]+Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Mar 17 2015 *)
CROSSREFS
Sequence in context: A012933 A013164 A013024 * A259133 A131847 A351733
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Definition clarified by Harvey P. Dale, Mar 17 2015
STATUS
approved