A281059 - cp's OEIS frontend

A281059 Number of 4Xn 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	29
3	376
4	1022
5	2452
6	5400
7	10570
8	19892
9	36616
10	66354
11	118926
12	211382
13	373266
14	655580
15	1146156
16	1995858
17	3463242
18	5990498
19	10332426
20	17775144
21	30506480
22	52242450
23	89285638
24	152311246
25	259377954
26	440998484
27	748670868
28	1269219570

[0, 29, 376, 1022, 2452, 5400, 10570, 19892, 36616, 66354, 118926, 211382, 373266, 655580, 1146156, 1995858, 3463242, 5990498, 10332426, 17775144, 30506480, 52242450, 89285638, 152311246, 259377954, 440998484, 748670868, 1269219570]

cp's OEIS Frontend

A281059 Number of 4Xn 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