A237530 - cp's OEIS frontend

A237530 Number of non-equivalent (mod D_3) ways to choose three points in an n X n X n triangular grid so that they do not form a 2 X 2 X 2 subtriangle.

n	a(n)
2	0
3	4
4	22
5	82
6	231
7	566
8	1216
9	2410
10	4428
11	7712
12	12780
13	20392
14	31409
15	47032
16	68594
17	97878
18	136836
19	187998
20	254100
21	338602
22	445213
23	578524
24	743424
25	945860
26	1192126
27	1489768
28	1846734
29	2272430
30	2776725
31	3371170
32	4067840
33	4880734
34	5824442
35	6915732
36	8172036
37	9613236

[0, 4, 22, 82, 231, 566, 1216, 2410, 4428, 7712, 12780, 20392, 31409, 47032, 68594, 97878, 136836, 187998, 254100, 338602, 445213, 578524, 743424, 945860, 1192126, 1489768, 1846734, 2272430, 2776725, 3371170, 4067840, 4880734, 5824442, 6915732, 8172036, 9613236]

cp's OEIS Frontend

A237530 Number of non-equivalent (mod D_3) ways to choose three points in an n X n X n triangular grid so that they do not form a 2 X 2 X 2 subtriangle.

Table of values

List of values