A013220 sec(log(x+1)-sin(x))= 1+3/4!*x^4-30/5!*x^5+180/6!*x^6-1113/7!*x^7...

1, 0, 0, 0, 3, -30, 180, -1113, 9009, -92484, 1082214, -13409495, 175970751, -2496463398, 38493086632, -639838512285, 11345248531169, -213247722492136, 4238445880373338, -88930681789096755

Offset

0,5

Links

Table of n, a(n) for n=0..19.

Crossrefs

Sequence in context: A013221 A013214 A013219 * A177727 A132413 A344907

Adjacent sequences: A013217 A013218 A013219 * A013221 A013222 A013223

Keyword

sign

Author

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

Status

approved