A012338 sec(arcsin(x)*sin(x))=1+12/4!*x^4+10640/8!*x^8+120960/10!*x^10...

1, 0, 12, 0, 10640, 120960, 74771136, 4123159040, 2129817514240, 315733300850688, 176225504731384832, 52096908207506505728, 34345862831326069035008, 16865198263103149299957760

Offset

0,3

Links

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

Crossrefs

Sequence in context: A012337 A012339 A012448 * A012453 A284453 A012454

Adjacent sequences: A012335 A012336 A012337 * A012339 A012340 A012341

Keyword

nonn

Author

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

Status

approved