A013469 exp(cos(x)-cosh(x))=1-2/2!*x^2+12/4!*x^4-122/6!*x^6+1792/8!*x^8...
1, -2, 12, -122, 1792, -35282, 889152, -27747722, 1045556992, -46640267042, 2424156352512, -144890071612442, 9849171061952512, -754330752297972722, 64566114865428283392
Offset: 0