Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.
A207595
Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.
Terms
- a(0) =2a(1) =16a(2) =90a(3) =441a(4) =3915a(5) =42025a(6) =292600a(7) =1982464a(8) =21925800a(9) =268730449a(10) =2281109103a(11) =19215781641a(12) =242188032450
External references
- oeis: A207595