Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001001.
A260286
Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001001.
Terms
- a(0) =48a(1) =201a(2) =1336a(3) =5629a(4) =10952a(5) =72652a(6) =385280a(7) =1076482a(8) =6847376a(9) =52370322a(10) =193796536a(11) =1164631962a(12) =12219797584a(13) =66126528758a(14) =352038007240
External references
- oeis: A260286