A012072 cosh(arcsin(arcsin(x)))=1+1/2!*x^2+9/4!*x^4+249/6!*x^6+14129/8!*x^8...

1, 1, 9, 249, 14129, 1362961, 200409465, 41812246345, 11765081428705, 4298599985014945, 1980239469431883625, 1123437678322006300185, 769950079011855688807185, 627326819278687159338591665

Offset

0,3

Links

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

Crossrefs

Sequence in context: A289551 A012202 A012098 * A007408 A066989 A249593

Adjacent sequences: A012069 A012070 A012071 * A012073 A012074 A012075

Keyword

nonn

Author

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

Status

approved