A012786 arctan(sec(x)*arcsin(x))=x+2/3!*x^3-12/5!*x^5-432/7!*x^7+10000/9!*x^9...

1, 2, -12, -432, 10000, 1500512, -18269760, -16350361856, 922523568384, 990634832194048, 92553699220882432, -44373953423964778496, 9057208032779104423936, 25540436414796388855898112

Offset

0,2

Links

Table of n, a(n) for n=0..13.

Crossrefs

Sequence in context: A012383 A012751 A012428 * A168504 A062738 A350790

Adjacent sequences: A012783 A012784 A012785 * A012787 A012788 A012789

Keyword

sign

Author

Patrick Demichel

Status

approved