A062154 - cp's OEIS frontend

A062154 Number T(n,m) of n X m matrices over {0,1,2} with all row and column sums equal to 1 or 2, m=0,..,2*n.

n	a(n)
0	1
1	0
2	2
3	1
4	0
5	1
6	13
7	18
8	6
9	0
10	0
11	18
12	189
13	450
14	360
15	90
16	0
17	0
18	6
19	450
20	4842
21	16380
22	22140
23	12600
24	2520
25	0
26	0
27	0
28	360
29	16380
30	190080
31	832950
32	1631700
33	1537200
34	680400
35	113400
36	0
37	0
38	0
39	90
40	22140
41	832950
42	10520010
43	56609280
44	147533400
45	200377800

[1, 0, 2, 1, 0, 1, 13, 18, 6, 0, 0, 18, 189, 450, 360, 90, 0, 0, 6, 450, 4842, 16380, 22140, 12600, 2520, 0, 0, 0, 360, 16380, 190080, 832950, 1631700, 1537200, 680400, 113400, 0, 0, 0, 90, 22140, 832950, 10520010, 56609280, 147533400, 200377800]

cp's OEIS Frontend

A062154 Number T(n,m) of n X m matrices over {0,1,2} with all row and column sums equal to 1 or 2, m=0,..,2*n.

Table of values

List of values