A211910 - cp's OEIS frontend

A211910 T(n,k)=Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal or vertical neighbor, and containing the value n(n+1)/2-k-1.

n	a(n)
1	0
2	0
3	2
4	0
5	2
6	10
7	0
8	0
9	30
10	34
11	0
12	0
13	41
14	418
15	86
16	0
17	0
18	42
19	2385
20	3006
21	181
22	0
23	0
24	42
25	6927
26	55822
27	14201
28	337
29	0
30	0
31	0
32	11296
33	605769
34	637721
35	51157
36	575
37	0
38	0
39	0
40	12732
41	3997836
42	18239150
43	4639742
44	152650
45	919
46	0
47	0
48	0
49	12839
50	16321156
51	350026718
52	281228042

[0, 0, 2, 0, 2, 10, 0, 0, 30, 34, 0, 0, 41, 418, 86, 0, 0, 42, 2385, 3006, 181, 0, 0, 42, 6927, 55822, 14201, 337, 0, 0, 0, 11296, 605769, 637721, 51157, 575, 0, 0, 0, 12732, 3997836, 18239150, 4639742, 152650, 919, 0, 0, 0, 12839, 16321156, 350026718, 281228042]

cp's OEIS Frontend

A211910 T(n,k)=Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal or vertical neighbor, and containing the value n(n+1)/2-k-1.

Table of values

List of values