A291452 - cp's OEIS frontend

A291452 Triangle read by rows, expansion of e.g.f. exp(x*(cos(z) + cosh(z) - 2)/2), nonzero coefficients of z.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	35
6	0
7	1
8	495
9	5775
10	0
11	1
12	8255
13	450450
14	2627625
15	0
16	1
17	130815
18	35586525
19	727476750
20	2546168625
21	0
22	1
23	2098175
24	2941884000
25	181262956875
26	1932541986375
27	4509264634875

[1, 0, 1, 0, 1, 35, 0, 1, 495, 5775, 0, 1, 8255, 450450, 2627625, 0, 1, 130815, 35586525, 727476750, 2546168625, 0, 1, 2098175, 2941884000, 181262956875, 1932541986375, 4509264634875]

cp's OEIS Frontend

A291452 Triangle read by rows, expansion of e.g.f. exp(x*(cos(z) + cosh(z) - 2)/2), nonzero coefficients of z.

Table of values

List of values