A225826 - cp's OEIS frontend

A225826 Number of binary pattern classes in the (2,n)-rectangular grid: two patterns are in 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	3
2	7
3	24
4	76
5	288
6	1072
7	4224
8	16576
9	66048
10	262912
11	1050624
12	4197376
13	16785408
14	67121152
15	268468224
16	1073790976
17	4295098368
18	17180065792
19	68720001024
20	274878693376
21	1099513724928
22	4398049656832
23	17592194433024
24	70368756760576

[1, 3, 7, 24, 76, 288, 1072, 4224, 16576, 66048, 262912, 1050624, 4197376, 16785408, 67121152, 268468224, 1073790976, 4295098368, 17180065792, 68720001024, 274878693376, 1099513724928, 4398049656832, 17592194433024, 70368756760576]

cp's OEIS Frontend

A225826 Number of binary pattern classes in the (2,n)-rectangular grid: two patterns are in 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