A268628 - cp's OEIS frontend

A268628 T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.

n	a(n)
1	3
2	9
3	9
4	24
5	42
6	24
7	60
8	174
9	174
10	60
11	144
12	666
13	1086
14	666
15	144
16	336
17	2430
18	6300
19	6300
20	2430
21	336
22	768
23	8586
24	34890
25	55452
26	34890
27	8586
28	768
29	1728
30	29646
31	187224
32	467190
33	467190
34	187224
35	29646
36	1728
37	3840
38	100602
39	982086
40	3819654
41	6000978
42	3819654

[3, 9, 9, 24, 42, 24, 60, 174, 174, 60, 144, 666, 1086, 666, 144, 336, 2430, 6300, 6300, 2430, 336, 768, 8586, 34890, 55452, 34890, 8586, 768, 1728, 29646, 187224, 467190, 467190, 187224, 29646, 1728, 3840, 100602, 982086, 3819654, 6000978, 3819654]

cp's OEIS Frontend

A268628 T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally or vertically adjacent neighbor totalling two no more than once.

Table of values

List of values