A286893 - cp's OEIS frontend

A286893 Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 6 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	6
3	1
4	21
5	351
6	1
7	126
8	12096
9	2544696
10	1
11	666
12	420876
13	544638816
14	705278736576
15	1
16	3996
17	15132096
18	117564302016
19	914040184444416
20	7107572245840091136
21	1
22	23436
23	544230576
24	25390538401536
25	1184595336212990976
26	55268479955808421134336
27	2578606199622710056510488576

[1, 1, 6, 1, 21, 351, 1, 126, 12096, 2544696, 1, 666, 420876, 544638816, 705278736576, 1, 3996, 15132096, 117564302016, 914040184444416, 7107572245840091136, 1, 23436, 544230576, 25390538401536, 1184595336212990976, 55268479955808421134336, 2578606199622710056510488576]

cp's OEIS Frontend

A286893 Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 6 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