A013481 sech(cos(x)-cosh(x)) = 1-12/4!*x^4+8288/8!*x^8-39475392/12!*x^12...

1, -12, 8288, -39475392, 689369608448, -32038788679636992, 3265606511334528831488, -641363922266872095050022912

Offset

0,2

Links

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

Crossrefs

Sequence in context: A201493 A009173 A012531 * A013513 A013480 A107254

Adjacent sequences: A013478 A013479 A013480 * A013482 A013483 A013484

Keyword

sign

Author

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

Status

approved