A009676 Expansion of tan(sinh(log(1+x))).

0, 1, -1, 5, -24, 166, -1350, 13082, -145376, 1827376, -25592400, 395118272, -6664254432, 121895495632, -2402856317680, 50776649007632, -1144984530078720, 27440409496420096, -696465326225541888

Offset

0,4

Links

Table of n, a(n) for n=0..18.

Mathematica

Tan[ Sinh[ Log[ 1+x ] ] ]

Crossrefs

Sequence in context: A009424 A184597 A009601 * A192995 A027851 A120765

Adjacent sequences: A009673 A009674 A009675 * A009677 A009678 A009679

Keyword

sign,easy

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved