A208872 - cp's OEIS frontend

A208872 T(n,k)=Number of nXk 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

n	a(n)
1	1
2	2
3	2
4	5
5	12
6	5
7	15
8	136
9	143
10	15
11	51
12	1798
13	6520
14	1979
15	51
16	187
17	24472
18	307165
19	324682
20	28246
21	187
22	715
23	334618
24	14493405
25	52947540
26	16205218
27	405481
28	715
29	2795
30	4578580
31	683903931
32	8624977114
33	9130195864
34	808928836
35	5826959
36	2795
37	11051
38	62655190

[1, 2, 2, 5, 12, 5, 15, 136, 143, 15, 51, 1798, 6520, 1979, 51, 187, 24472, 307165, 324682, 28246, 187, 715, 334618, 14493405, 52947540, 16205218, 405481, 715, 2795, 4578580, 683903931, 8624977114, 9130195864, 808928836, 5826959, 2795, 11051, 62655190]

cp's OEIS Frontend

A208872 T(n,k)=Number of nXk 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

List of values