Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 or 01010101.
A259734
Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 or 01010101.
Terms
- a(0) =20a(1) =36a(2) =190a(3) =868a(4) =4904a(5) =36522a(6) =416107a(7) =4569918a(8) =77901650a(9) =1497446190a(10) =42287505995
External references
- oeis: A259734