A012792 cosh(sec(x)*arcsin(x))=1+1/2!*x^2+17/4!*x^4+505/6!*x^6+25153/8!*x^8...

1, 1, 17, 505, 25153, 1945265, 217998673, 33522871785, 6789373095937, 1755926841763681, 566210591513987345, 223294329140130622169, 105980484509441390341953, 59708382496464697426393105

Offset

0,3

Links

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

Crossrefs

Sequence in context: A109305 A130660 A185659 * A012232 A114063 A214135

Adjacent sequences: A012789 A012790 A012791 * A012793 A012794 A012795

Keyword

nonn

Author

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

Status

approved