Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.
A207461
Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.
Terms
- a(0) =2a(1) =16a(2) =98a(3) =1307a(4) =21517a(5) =491948a(6) =16675001a(7) =760840082a(8) =48694010408
External references
- oeis: A207461