A283434 - cp's OEIS frontend

A283434 Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 5 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	5
3	1
4	15
5	175
6	1
7	75
8	4125
9	496875
10	1
11	325
12	98125
13	61140625
14	38147265625
15	1
16	1625
17	2446875
18	7632421875
19	23841923828125
20	74505821533203125
21	1
22	7875
23	61046875
24	953736328125
25	14901161376953125
26	232830644622802734375
27	3637978807094573974609375

[1, 1, 5, 1, 15, 175, 1, 75, 4125, 496875, 1, 325, 98125, 61140625, 38147265625, 1, 1625, 2446875, 7632421875, 23841923828125, 74505821533203125, 1, 7875, 61046875, 953736328125, 14901161376953125, 232830644622802734375, 3637978807094573974609375]

cp's OEIS Frontend

A283434 Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 5 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