A194540 - cp's OEIS frontend

A194540 T(n,k) is the number of lower triangles of an n X n 0..k array with new values introduced in row major order 0..k and no element equal to more than one horizontal or vertical neighbor.

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	6
7	1
8	4
9	59
10	12
11	1
12	4
13	116
14	1851
15	23
16	1
17	4
18	131
19	16556
20	119548
21	43
22	1
23	4
24	132
25	43785
26	7721920
27	16039294
28	79
29	1
30	4
31	132
32	62038
33	79201795
34	11525456507
35	4460214471
36	143
37	1
38	4
39	132
40	67377
41	286773762
42	627974590650
43	54979732214116
44	2572187445993

[1, 1, 3, 1, 4, 6, 1, 4, 59, 12, 1, 4, 116, 1851, 23, 1, 4, 131, 16556, 119548, 43, 1, 4, 132, 43785, 7721920, 16039294, 79, 1, 4, 132, 62038, 79201795, 11525456507, 4460214471, 143, 1, 4, 132, 67377, 286773762, 627974590650, 54979732214116, 2572187445993]

cp's OEIS Frontend

A194540 T(n,k) is the number of lower triangles of an n X n 0..k array with new values introduced in row major order 0..k and no element equal to more than one horizontal or vertical neighbor.

Table of values

List of values