Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 0 and 1 1 1 vertically.
A207891
Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 0 and 1 1 1 vertically.
Terms
- a(0) =2a(1) =16a(2) =84a(3) =870a(4) =11196a(5) =205258a(6) =5888458a(7) =243318702a(8) =13997746826
External references
- oeis: A207891