Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111.
A260062
Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111.
Terms
- a(0) =48a(1) =214a(2) =1680a(3) =7725a(4) =25444a(5) =251582a(6) =1838884a(7) =7478945a(8) =76589120a(9) =1223125268a(10) =8125786040a(11) =53795046102
External references
- oeis: A260062