A117437 - cp's OEIS frontend

A117437 Expansion of e.g.f.: exp(x)sec(2x).

n	a(n)
0	1
1	1
2	5
3	13
4	105
5	441
6	5165
7	30213
8	469585
9	3529201
10	68525525
11	629401213
12	14664091065
13	159175688361
14	4326609913085
15	54189700721013
16	1683369010256545
17	23894940183997921
18	835066388382183845
19	13248060325188261613

[1, 1, 5, 13, 105, 441, 5165, 30213, 469585, 3529201, 68525525, 629401213, 14664091065, 159175688361, 4326609913085, 54189700721013, 1683369010256545, 23894940183997921, 835066388382183845, 13248060325188261613]

cp's OEIS Frontend

A117437 Expansion of e.g.f.: exp(x)sec(2x).

Table of values

List of values

cp's OEIS Frontend

A117437 Expansion of e.g.f.: exp(x)*sec(2*x).

Table of values

List of values

A117437 Expansion of e.g.f.: exp(x)sec(2x).