A257490 - cp's OEIS frontend

A257490 Irregular triangle read by rows in which the n-th row lists multinomials (A036040) for partitions of 2n which have only even parts in Abramowitz-Stegun ordering.

n	a(n)
1	1
2	1
3	3
4	1
5	15
6	15
7	1
8	28
9	35
10	210
11	105
12	1
13	45
14	210
15	630
16	1575
17	3150
18	945
19	1
20	66
21	495
22	462
23	1485
24	13860
25	5775
26	13860
27	51975
28	51975
29	10395
30	1
31	91
32	1001
33	3003
34	3003
35	45045
36	42042
37	105105
38	45045
39	630630
40	525525
41	315315
42	1576575
43	945945
44	135135

[1, 1, 3, 1, 15, 15, 1, 28, 35, 210, 105, 1, 45, 210, 630, 1575, 3150, 945, 1, 66, 495, 462, 1485, 13860, 5775, 13860, 51975, 51975, 10395, 1, 91, 1001, 3003, 3003, 45045, 42042, 105105, 45045, 630630, 525525, 315315, 1576575, 945945, 135135]

cp's OEIS Frontend

A257490 Irregular triangle read by rows in which the n-th row lists multinomials (A036040) for partitions of 2n which have only even parts in Abramowitz-Stegun ordering.

Table of values

List of values