A012151 arcsin(tan(tan(x)))=x+5/3!*x^3+121/5!*x^5+7013/7!*x^7+760465/9!*x^9...

1, 5, 121, 7013, 760465, 134832389, 35777541385, 13330794123941, 6648498133614241, 4277423006885663237, 3448604325132908471833, 3404386999104410323462373, 4038035818558270717884559921

Offset

0,2

Links

Table of n, a(n) for n=0..12.

Crossrefs

Sequence in context: A012190 A012077 A012046 * A012156 A368854 A290167

Adjacent sequences: A012148 A012149 A012150 * A012152 A012153 A012154

Keyword

nonn

Author

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

Status

approved