A012139 sinh(arcsin(arctanh(x)))=x+4/3!*x^3+84/5!*x^5+4208/7!*x^7+386064/9!*x^9...

1, 4, 84, 4208, 386064, 56523072, 12121690944, 3589856932608, 1406019035808000, 704535958463063040, 439949357001315947520, 335139715537167259791360, 305989012726577998256148480

Offset

0,2

Links

Table of n, a(n) for n=0..12.

Crossrefs

Sequence in context: A024260 A099706 A012065 * A012037 A012025 A012107

Adjacent sequences: A012136 A012137 A012138 * A012140 A012141 A012142

Keyword

nonn

Author

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

Status

approved