A283115 - cp's OEIS frontend

A283115 Number of nonequivalent ways (mod D_3) to place 4 points on an n X n X n triangular grid so that no two of them are on the same row, column or diagonal.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	3
7	40
8	242
9	1038
10	3504
11	9998
12	25158
13	57410
14	121023
15	239148
16	447552
17	799764
18	1373400
19	2278290
20	3666036
21	5742396
22	8781111
23	13141326
24	19287246
25	27811906
26	39463424
27	55177122
28	76109826
29	103681214
30	139618479
31	186008654
32	245354424
33	320640264
34	415401264

[0, 0, 0, 0, 0, 3, 40, 242, 1038, 3504, 9998, 25158, 57410, 121023, 239148, 447552, 799764, 1373400, 2278290, 3666036, 5742396, 8781111, 13141326, 19287246, 27811906, 39463424, 55177122, 76109826, 103681214, 139618479, 186008654, 245354424, 320640264, 415401264]

cp's OEIS Frontend

A283115 Number of nonequivalent ways (mod D_3) to place 4 points on an n X n X n triangular grid so that no two of them are on the same row, column or diagonal.

Table of values

List of values