A012995 sec(arctan(x)+arcsin(x))=1+4/2!*x^2+72/4!*x^4+3510/6!*x^6+315000/8!*x^8...

1, 4, 72, 3510, 315000, 45898650, 9783981900, 2881566037350, 1118460016674000, 553787154746075250, 340453667922140272500, 254502044013845436558750, 227301229608843762807435000

Offset

0,2

Links

Table of n, a(n) for n=0..12.

Crossrefs

Sequence in context: A013066 A013102 A224900 * A076744 A177392 A158269

Adjacent sequences: A012992 A012993 A012994 * A012996 A012997 A012998

Keyword

nonn

Author

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

Status

approved