A213800 - cp's OEIS frontend

A213800 T(n,k)=Number of n X n 0..k symmetric arrays with every row summing to floor(n*k/2).

n	a(n)
1	1
2	1
3	2
4	1
5	3
6	4
7	1
8	4
9	13
10	18
11	1
12	5
13	29
14	169
15	112
16	1
17	6
18	57
19	880
20	5673
21	1760
22	1
23	7
24	96
25	3249
26	87932
27	526443
28	35150
29	1
30	8
31	153
32	9522
33	815263
34	34725760
35	133721189
36	1944530
37	1
38	9
39	226
40	23753
41	4843626
42	932587453
43	46259653191
44	95133854529
45	133948836
46	1
47	10
48	323

[1, 1, 2, 1, 3, 4, 1, 4, 13, 18, 1, 5, 29, 169, 112, 1, 6, 57, 880, 5673, 1760, 1, 7, 96, 3249, 87932, 526443, 35150, 1, 8, 153, 9522, 815263, 34725760, 133721189, 1944530, 1, 9, 226, 23753, 4843626, 932587453, 46259653191, 95133854529, 133948836, 1, 10, 323]

cp's OEIS Frontend

A213800 T(n,k)=Number of n X n 0..k symmetric arrays with every row summing to floor(n*k/2).

Table of values

List of values