A012909 sec(arcsin(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+107/4!*x^4-490/5!*x^5...

1, 0, 4, -6, 107, -490, 7780, -66045, 1113185, -14056740, 264337750, -4409272175, 93796875575, -1927625491350, 46373594683000, -1124449061497125, 30408904419466625, -845698069130473000

Offset

0,3

Links

Table of n, a(n) for n=0..17.

Crossrefs

Sequence in context: A139730 A367880 A013023 * A219507 A367878 A012934

Adjacent sequences: A012906 A012907 A012908 * A012910 A012911 A012912

Keyword

sign

Author

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

Status

approved