Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010001 00010101 or 01010101.
A261105
Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010001 00010101 or 01010101.
Terms
- a(0) =28a(1) =52a(2) =278a(3) =1498a(4) =13040a(5) =127038a(6) =2037285a(7) =35551388a(8) =1021480084a(9) =32245216400
External references
- oeis: A261105