A283433 - cp's OEIS frontend

A283433 Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 4 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	4
3	1
4	10
5	76
6	1
7	40
8	1120
9	67840
10	1
11	136
12	16576
13	4212736
14	1073790976
15	1
16	544
17	263680
18	268779520
19	274882625536
20	281475530358784
21	1
22	2080
23	4197376
24	17184194560
25	70368756760576
26	288230393868451840
27	1180591620768950910976

[1, 1, 4, 1, 10, 76, 1, 40, 1120, 67840, 1, 136, 16576, 4212736, 1073790976, 1, 544, 263680, 268779520, 274882625536, 281475530358784, 1, 2080, 4197376, 17184194560, 70368756760576, 288230393868451840, 1180591620768950910976]

cp's OEIS Frontend

A283433 Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 4 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