A035342 - cp's OEIS frontend

A035342 The convolution matrix of the double factorial of odd numbers (A001147).

n	a(n)
1	1
2	3
3	1
4	15
5	9
6	1
7	105
8	87
9	18
10	1
11	945
12	975
13	285
14	30
15	1
16	10395
17	12645
18	4680
19	705
20	45
21	1
22	135135
23	187425
24	82845
25	15960
26	1470
27	63
28	1
29	2027025
30	3133935
31	1595790
32	370125
33	43890
34	2730
35	84
36	1
37	34459425
38	58437855
39	33453945
40	8998290

[1, 3, 1, 15, 9, 1, 105, 87, 18, 1, 945, 975, 285, 30, 1, 10395, 12645, 4680, 705, 45, 1, 135135, 187425, 82845, 15960, 1470, 63, 1, 2027025, 3133935, 1595790, 370125, 43890, 2730, 84, 1, 34459425, 58437855, 33453945, 8998290]

cp's OEIS Frontend

A035342 The convolution matrix of the double factorial of odd numbers (A001147).

Table of values

List of values