A271617 - cp's OEIS frontend

A271617 T(n,k) = Number of ways to reciprocally link elements of an n X n X n triangular array with themselves or a neighbor, with no more than k elements linked to themselves.

n	a(n)
1	1
2	1
3	3
4	1
5	3
6	2
7	1
8	4
9	17
10	6
11	1
12	4
13	17
14	114
15	240
16	1
17	4
18	26
19	114
20	240
21	2238
22	1
23	4
24	26
25	307
26	2571
27	2238
28	2196
29	1
30	4
31	27
32	307
33	2571
34	42702
35	216318
36	37004
37	1
38	4
39	27
40	406
41	7764
42	42702
43	216318
44	5622392
45	20454036
46	1
47	4
48	27
49	406
50	7764
51	222936
52	3243689
53	5622392
54	20454036
55	970623228

[1, 1, 3, 1, 3, 2, 1, 4, 17, 6, 1, 4, 17, 114, 240, 1, 4, 26, 114, 240, 2238, 1, 4, 26, 307, 2571, 2238, 2196, 1, 4, 27, 307, 2571, 42702, 216318, 37004, 1, 4, 27, 406, 7764, 42702, 216318, 5622392, 20454036, 1, 4, 27, 406, 7764, 222936, 3243689, 5622392, 20454036, 970623228]

cp's OEIS Frontend

A271617 T(n,k) = Number of ways to reciprocally link elements of an n X n X n triangular array with themselves or a neighbor, with no more than k elements linked to themselves.

Table of values

List of values