A281058 - cp's OEIS frontend

A281058 Number of 3 X n 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	6
3	68
4	239
5	618
6	1403
7	2828
8	5482
9	10342
10	19136
11	34907
12	62976
13	112617
14	199929
15	352771
16	619208
17	1081946
18	1882951
19	3265367
20	5644772
21	9730124
22	16728760
23	28693405
24	49108842
25	83882613
26	143016171
27	243420929
28	413658928
29	701916100
30	1189400585

[0, 6, 68, 239, 618, 1403, 2828, 5482, 10342, 19136, 34907, 62976, 112617, 199929, 352771, 619208, 1081946, 1882951, 3265367, 5644772, 9730124, 16728760, 28693405, 49108842, 83882613, 143016171, 243420929, 413658928, 701916100, 1189400585]

cp's OEIS Frontend

A281058 Number of 3 X n 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