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A012782 exp(sec(x)*arcsin(x))=1+x+1/2!*x^2+5/3!*x^3+17/4!*x^4+85/5!*x^5... 1
1, 1, 1, 5, 17, 85, 505, 3201, 25153, 204905, 1945265, 19581949, 217998673, 2608398013, 33522871785, 463598293497, 6789373095937, 106484041306577, 1755926841763681, 30821112722260469, 566210591513987345 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..20.

CROSSREFS

Sequence in context: A036756 A149757 A153499 * A026685 A089923 A145041

Adjacent sequences:  A012779 A012780 A012781 * A012783 A012784 A012785

KEYWORD

nonn

AUTHOR

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

STATUS

approved

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Last modified January 22 23:50 EST 2022. Contains 350504 sequences. (Running on oeis4.)