A009162 Expansion of cosh(tan(x).exp(x)).

1, 0, 1, 6, 33, 180, 1137, 8218, 68929, 640584, 6534049, 71605710, 842179041, 10543617084, 140430103569, 1979476257442, 29478515793025, 461911114620432, 7600066231728193, 130898815536828438

Offset

0,4

Links

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

Mathematica

Cosh[ Tan[ x ]*Exp[ x ] ]

Crossrefs

Sequence in context: A137627 A138395 A050151 * A012718 A297221 A006630

Adjacent sequences: A009159 A009160 A009161 * A009163 A009164 A009165

Keyword

nonn,easy

Author

R. H. Hardin

Extensions

Extended and signs tested Mar 15 1997 by Olivier Gérard.

Status

approved