Number of (n+1)X(3+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0011 or 0111.
A259422
Number of (n+1)X(3+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0011 or 0111.
Terms
- a(0) =142a(1) =1366a(2) =12953a(3) =123306a(4) =1172659a(5) =11155819a(6) =106118138a(7) =1009466878a(8) =9602626846a(9) =91346008647a(10) =868937609248
External references
- oeis: A259422