A336575 - cp's OEIS frontend

A336575 Square array T(n,k), n>=0, k>=0, read by antidiagonals, where T(0,k) = 1 and T(n,k) = (1/n) * Sum_{j=1..n} 3^j * binomial(n,j) * binomial(k*n,j-1) for n > 0.

n	a(n)
0	1
1	1
2	3
3	1
4	3
5	3
6	1
7	3
8	12
9	3
10	1
11	3
12	21
13	57
14	3
15	1
16	3
17	30
18	192
19	300
20	3
21	1
22	3
23	39
24	408
25	2001
26	1686
27	3
28	1
29	3
30	48
31	705
32	6402
33	22539
34	9912
35	3
36	1
37	3
38	57
39	1083
40	14799
41	109137
42	267276
43	60213
44	3
45	1
46	3
47	66
48	1542
49	28488
50	338430
51	1964010
52	3287496
53	374988
54	3
55	1
56	3
57	75
58	2082
59	48765
60	817743
61	8181597
62	36718680
63	41556585
64	2381322
65	3

[1, 1, 3, 1, 3, 3, 1, 3, 12, 3, 1, 3, 21, 57, 3, 1, 3, 30, 192, 300, 3, 1, 3, 39, 408, 2001, 1686, 3, 1, 3, 48, 705, 6402, 22539, 9912, 3, 1, 3, 57, 1083, 14799, 109137, 267276, 60213, 3, 1, 3, 66, 1542, 28488, 338430, 1964010, 3287496, 374988, 3, 1, 3, 75, 2082, 48765, 817743, 8181597, 36718680, 41556585, 2381322, 3]

cp's OEIS Frontend

A336575 Square array T(n,k), n>=0, k>=0, read by antidiagonals, where T(0,k) = 1 and T(n,k) = (1/n) * Sum_{j=1..n} 3^j * binomial(n,j) * binomial(k*n,j-1) for n > 0.

Table of values

List of values