Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 01010101 or 01010111.
A260137
Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 01010101 or 01010111.
Terms
- a(0) =1880a(1) =8998a(2) =61914a(3) =266156a(4) =1340176a(5) =7839850a(6) =39696994a(7) =200149838a(8) =1081436482a(9) =5672351526a(10) =29202675242a(11) =153702924266a(12) =807944925446
External references
- oeis: A260137