A013480 sec(cos(x)-cosh(x)) = 1+12/4!*x^4+8512/8!*x^8+41692992/12!*x^12...

1, 12, 8512, 41692992, 748457181952, 35753146158600192, 3745546830245915840512, 756079630242293501892083712

Offset

0,2

Links

Table of n, a(n) for n=0..7.

Crossrefs

Sequence in context: A012531 A013481 A013513 * A107254 A345679 A012532

Adjacent sequences: A013477 A013478 A013479 * A013481 A013482 A013483

Keyword

nonn

Author

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

Status

approved