A281062 - cp's OEIS frontend

A281062 Number of 7Xn 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	0
2	1686
3	15028
4	27635
5	58005
6	119205
7	221212
8	394884
9	689397
10	1191475
11	2050466
12	3523654
13	6051629
14	10389370
15	17827528
16	30568529
17	52364160
18	89595493
19	153099429
20	261254732
21	445190263
22	757565887
23	1287362382
24	2184769552
25	3703030677

[0, 1686, 15028, 27635, 58005, 119205, 221212, 394884, 689397, 1191475, 2050466, 3523654, 6051629, 10389370, 17827528, 30568529, 52364160, 89595493, 153099429, 261254732, 445190263, 757565887, 1287362382, 2184769552, 3703030677]

cp's OEIS Frontend

A281062 Number of 7Xn 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