Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 00100101 or 01010101.
A261257
Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 00100101 or 01010101.
Terms
- a(0) =36a(1) =52a(2) =288a(3) =1918a(4) =11733a(5) =85506a(6) =1062118a(7) =13599460a(8) =242945986a(9) =5120328922a(10) =155899484972
External references
- oeis: A261257