A283432 - cp's OEIS frontend

A283432 Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 3 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	3
3	1
4	6
5	27
6	1
7	18
8	216
9	5346
10	1
11	45
12	1701
13	134865
14	10766601
15	1
16	135
17	15066
18	3608550
19	871858485
20	211829725395
21	1
22	378
23	133407
24	96997824
25	70607782701
26	51472887053238
27	37523659114815147
28	1
29	1134
30	1198476
31	2616461190
32	5719211266905
33	12507889858389450
34	27354747358715650524
35	59824832319304600777362

[1, 1, 3, 1, 6, 27, 1, 18, 216, 5346, 1, 45, 1701, 134865, 10766601, 1, 135, 15066, 3608550, 871858485, 211829725395, 1, 378, 133407, 96997824, 70607782701, 51472887053238, 37523659114815147, 1, 1134, 1198476, 2616461190, 5719211266905, 12507889858389450, 27354747358715650524, 59824832319304600777362]

cp's OEIS Frontend

A283432 Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 3 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