Number of n X n 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 0 vertically.
A207655
Number of n X n 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 0 vertically.
Terms
- a(0) =2a(1) =16a(2) =84a(3) =870a(4) =13902a(5) =264568a(6) =12327618a(7) =1144562438a(8) =64916691796
External references
- oeis: A207655