A228582 - cp's OEIS frontend

A228582 The number of binary pattern classes in the (2,n)-rectangular grid with 7 '1's and (2n-7) '0's: 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	0
1	0
2	0
3	0
4	2
5	32
6	198
7	868
8	2860
9	7984
10	19380
11	42696
12	86526
13	164560
14	296010
15	509132
16	841464
17	1345184
18	2086920
19	3155472
20	4660890
21	6745152
22	9580142
23	13381940
24	18407268
25	24972112
26	33446140
27	44276440
28	57979350
29	75170160
30	96551730

[0, 0, 0, 0, 2, 32, 198, 868, 2860, 7984, 19380, 42696, 86526, 164560, 296010, 509132, 841464, 1345184, 2086920, 3155472, 4660890, 6745152, 9580142, 13381940, 18407268, 24972112, 33446140, 44276440, 57979350, 75170160, 96551730]

cp's OEIS Frontend

A228582 The number of binary pattern classes in the (2,n)-rectangular grid with 7 '1's and (2n-7) '0's: 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