A009146 Expansion of cosh(sin(x)*cos(x)).

1, 1, -15, 177, 1057, -245471, 15691665, -608056239, -20287425215, 8821231566145, -1376333505095631, 139148719952772849, -994319439549289631, -4366129925254794998687, 1524646116370009191174609

Offset

0,3

Links

Table of n, a(n) for n=0..14.

Mathematica

Cosh[ Sin[ x ]*Cos[ x ] ] (* Even Part *)

Crossrefs

Sequence in context: A071535 A081043 A155000 * A012800 A016216 A244604

Adjacent sequences: A009143 A009144 A009145 * A009147 A009148 A009149

Keyword

sign

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved