A012833 - cp's OEIS frontend

A012833 sech(sec(x)arcsinh(x))=1-1/2!x^2-3/4!x^4-45/6!x^6+2457/8!*x^8...

n	a(n)
0	1
1	-1
2	-3
3	-45
4	2457
5	-36825
6	12566037
7	-1732392389
8	313988548273
9	-92368244011185
10	30231378922437805
11	-12317648529216417629
12	6168347852710380187977
13	-3616136826996686827399305

[1, -1, -3, -45, 2457, -36825, 12566037, -1732392389, 313988548273, -92368244011185, 30231378922437805, -12317648529216417629, 6168347852710380187977, -3616136826996686827399305]

cp's OEIS Frontend

A012833 sech(sec(x)arcsinh(x))=1-1/2!x^2-3/4!x^4-45/6!x^6+2457/8!*x^8...

Table of values

List of values

cp's OEIS Frontend

A012833 sech(sec(x)*arcsinh(x))=1-1/2!*x^2-3/4!*x^4-45/6!*x^6+2457/8!*x^8...

Table of values

List of values

A012833 sech(sec(x)arcsinh(x))=1-1/2!x^2-3/4!x^4-45/6!x^6+2457/8!*x^8...