Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00010101 or 01010101.
A261284
Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00010101 or 01010101.
Terms
- a(0) =36a(1) =77a(2) =271a(3) =1147a(4) =6996a(5) =51268a(6) =561724a(7) =6295926a(8) =107865659a(9) =2065840014a(10) =57883274521
External references
- oeis: A261284