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A012001 -tan(log(cos(x)))=1/2!*x^2+2/4!*x^4+46/6!*x^6+1112/8!*x^8... 0
0, 1, 2, 46, 1112, 55816, 3804272, 372397936, 47682319232, 7841034902656, 1601250315636992, 398250217200414976, 118406090377889303552, 41478295178427681104896, 16904918898000336224294912 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..14.

CROSSREFS

Sequence in context: A158960 A174592 A066555 * A012006 A173586 A074041

Adjacent sequences:  A011998 A011999 A012000 * A012002 A012003 A012004

KEYWORD

nonn

AUTHOR

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

EXTENSIONS

Checked by N. J. A. Sloane, Dec 16 2011

STATUS

approved

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Last modified June 19 11:55 EDT 2013. Contains 226404 sequences.