A220602 - cp's OEIS frontend

A220602 T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly two horizontal, vertical and antidiagonal neighbors, without 3-loops.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	7
9	7
10	1
11	1
12	17
13	65
14	17
15	1
16	1
17	44
18	471
19	471
20	44
21	1
22	1
23	117
24	3469
25	9047
26	3469
27	117
28	1
29	1
30	305
31	25747
32	167614
33	167614
34	25747
35	305
36	1
37	1
38	798
39	190425
40	3174778
41	7558495
42	3174778
43	190425
44	798
45	1
46	1
47	2091
48	1408823
49	60138423
50	352586943

[1, 1, 1, 1, 2, 1, 1, 7, 7, 1, 1, 17, 65, 17, 1, 1, 44, 471, 471, 44, 1, 1, 117, 3469, 9047, 3469, 117, 1, 1, 305, 25747, 167614, 167614, 25747, 305, 1, 1, 798, 190425, 3174778, 7558495, 3174778, 190425, 798, 1, 1, 2091, 1408823, 60138423, 352586943]

cp's OEIS Frontend

A220602 T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly two horizontal, vertical and antidiagonal neighbors, without 3-loops.

Table of values

List of values