A013122 cos(tanh(x)+log(x+1))=1-4/2!*x^2+6/3!*x^3+13/4!*x^4-20/5!*x^5...

1, 0, -4, 6, 13, -20, -454, 1302, 13213, -57528, -566304, 1146750, 83953137, -715819260, 590760166, -61357519650, 2337988853657, -32573393982320, 362267655859524, -8238027536343882, 209882071249912757

Offset

0,3

Links

Table of n, a(n) for n=0..20.

Crossrefs

Sequence in context: A069061 A088811 A007977 * A012964 A284798 A120463

Adjacent sequences: A013119 A013120 A013121 * A013123 A013124 A013125

Keyword

sign

Author

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

Status

approved