A088874 - cp's OEIS frontend

A088874 T(n, k) = [x^k] (2n)! [z^(2n)] 1/cos(z)^x, triangle read by rows, for 0 <= k <= n.

n	a(n)
0	1
1	0
2	1
3	0
4	2
5	3
6	0
7	16
8	30
9	15
10	0
11	272
12	588
13	420
14	105
15	0
16	7936
17	18960
18	16380
19	6300
20	945
21	0
22	353792
23	911328
24	893640
25	429660
26	103950
27	10395
28	0
29	22368256
30	61152000
31	65825760
32	36636600
33	11351340
34	1891890
35	135135
36	0
37	1903757312

[1, 0, 1, 0, 2, 3, 0, 16, 30, 15, 0, 272, 588, 420, 105, 0, 7936, 18960, 16380, 6300, 945, 0, 353792, 911328, 893640, 429660, 103950, 10395, 0, 22368256, 61152000, 65825760, 36636600, 11351340, 1891890, 135135, 0, 1903757312]

cp's OEIS Frontend

A088874 T(n, k) = [x^k] (2n)! [z^(2n)] 1/cos(z)^x, triangle read by rows, for 0 <= k <= n.

Table of values

List of values

cp's OEIS Frontend

A088874 T(n, k) = [x^k] (2*n)! [z^(2*n)] 1/cos(z)^x, triangle read by rows, for 0 <= k <= n.

Table of values

List of values

A088874 T(n, k) = [x^k] (2n)! [z^(2n)] 1/cos(z)^x, triangle read by rows, for 0 <= k <= n.