A013414 sec(arcsin(x)-arctan(x))=1+90/6!*x^6-2520/8!*x^8+368550/10!*x^10...

1, 0, 0, 90, -2520, 368550, -24324300, 6214858650, -725350626000, 318282066852750, -56464293738352500, 40214549353890161250, -9894502805503110795000, 10823754426851479957593750

Offset

0,4

Links

Table of n, a(n) for n=0..13.

Crossrefs

Sequence in context: A013355 A013357 A013358 * A013413 A013411 A013415

Adjacent sequences: A013411 A013412 A013413 * A013415 A013416 A013417

Keyword

sign

Author

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

Status

approved