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A012338
sec(arcsin(x)*sin(x))=1+12/4!*x^4+10640/8!*x^8+120960/10!*x^10...
0
1, 0, 12, 0, 10640, 120960, 74771136, 4123159040, 2129817514240, 315733300850688, 176225504731384832, 52096908207506505728, 34345862831326069035008, 16865198263103149299957760
OFFSET
0,3
CROSSREFS
Sequence in context: A012337 A012339 A012448 * A012453 A284453 A012454
KEYWORD
nonn
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved