Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001.
A260169
Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001.
Terms
- a(0) =40a(1) =167a(2) =1054a(3) =6973a(4) =61216a(5) =651914a(6) =7542684a(7) =110062152a(8) =2074273964a(9) =43510471716
External references
- oeis: A260169