A281055 - cp's OEIS frontend

A281055 Number of nX7 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

n	a(n)
1	13
2	535
3	2828
4	10570
5	32370
6	87995
7	221212
8	526340
9	1201939
10	2661939
11	5752796
12	12190173
13	25413086
14	52258597
15	106216045
16	213723050
17	426288170
18	843735147
19	1658596579
20	3240610144
21	6297012052
22	12175728717
23	23437264280
24	44930659786

[13, 535, 2828, 10570, 32370, 87995, 221212, 526340, 1201939, 2661939, 5752796, 12190173, 25413086, 52258597, 106216045, 213723050, 426288170, 843735147, 1658596579, 3240610144, 6297012052, 12175728717, 23437264280, 44930659786]

cp's OEIS Frontend

A281055 Number of nX7 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

Table of values

List of values