A286919 - cp's OEIS frontend

A286919 Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 8 colors and n>=m, two patterns are in the same class if one of them can be obtained by a reflection or 180-degree rotation of the other.

n	a(n)
0	1
1	1
2	8
3	1
4	36
5	1072
6	1
7	288
8	66816
9	33693696
10	1
11	2080
12	4197376
13	17184194560
14	70368756760576
15	1
16	16640
17	268517376
18	8796399206400
19	288230393868451840
20	9444732983468915425280
21	1
22	131328
23	17180065792
24	4503616874348544
25	1180591620768950910976
26	309485009825866260538195968
27	81129638414606695206587887255552

[1, 1, 8, 1, 36, 1072, 1, 288, 66816, 33693696, 1, 2080, 4197376, 17184194560, 70368756760576, 1, 16640, 268517376, 8796399206400, 288230393868451840, 9444732983468915425280, 1, 131328, 17180065792, 4503616874348544, 1180591620768950910976, 309485009825866260538195968, 81129638414606695206587887255552]

cp's OEIS Frontend

A286919 Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 8 colors and n>=m, two patterns are in the same class if one of them can be obtained by a reflection or 180-degree rotation of the other.

Table of values

List of values