A203975 - cp's OEIS frontend

A203975 T(n,k)=Number of nXk 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by 0 1 to the left or above.

n	a(n)
1	1
2	2
3	2
4	4
5	7
6	4
7	7
8	29
9	29
10	7
11	13
12	106
13	258
14	106
15	13
16	24
17	396
18	2061
19	2061
20	396
21	24
22	44
23	1488
24	16723
25	34799
26	16723
27	1488
28	44
29	81
30	5569
31	136243
32	601521
33	601521
34	136243
35	5569
36	81
37	149
38	20859
39	1107082
40	10443081
41	22100882
42	10443081
43	1107082
44	20859
45	149
46	274

[1, 2, 2, 4, 7, 4, 7, 29, 29, 7, 13, 106, 258, 106, 13, 24, 396, 2061, 2061, 396, 24, 44, 1488, 16723, 34799, 16723, 1488, 44, 81, 5569, 136243, 601521, 601521, 136243, 5569, 81, 149, 20859, 1107082, 10443081, 22100882, 10443081, 1107082, 20859, 149, 274]

cp's OEIS Frontend

A203975 T(n,k)=Number of nXk 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by 0 1 to the left or above.

Table of values

List of values