A195220 - cp's OEIS frontend

A195220 T(n,k) is the number of lower triangles of an n X n integer array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by k or less and triangles differing by a constant counted only once.

n	a(n)
1	1
2	1
3	7
4	1
5	19
6	91
7	1
8	37
9	1047
10	2277
11	1
12	61
13	5453
14	176471
15	111031
16	1
17	91
18	18903
19	3395245
20	92031109
21	10654607
22	1
23	127
24	51205
25	31640829
26	9032683465
27	149824887097
28	2021888119
29	1
30	169
31	117585
32	189677411
33	289301569283
34	103565705397639

[1, 1, 7, 1, 19, 91, 1, 37, 1047, 2277, 1, 61, 5453, 176471, 111031, 1, 91, 18903, 3395245, 92031109, 10654607, 1, 127, 51205, 31640829, 9032683465, 149824887097, 2021888119, 1, 169, 117585, 189677411, 289301569283, 103565705397639]

cp's OEIS Frontend

A195220 T(n,k) is the number of lower triangles of an n X n integer array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by k or less and triangles differing by a constant counted only once.

Table of values

List of values