Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 1 1 vertically.
A207923
Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 1 1 vertically.
Terms
- a(0) =2a(1) =16a(2) =72a(3) =576a(4) =7744a(5) =138384a(6) =3773248a(7) =143233024a(8) =7961867964a(9) =694232238436
External references
- oeis: A207923