Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010001 or 00010101.
A260601
Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010001 or 00010101.
Terms
- a(0) =40a(1) =118a(2) =610a(3) =3388a(4) =26148a(5) =228678a(6) =2707758a(7) =34290074a(8) =611554908a(9) =11693188136a(10) =307867992364
External references
- oeis: A260601