Number of n X n 0..1 arrays with every element equal to 0, 1 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.
A301878
Number of n X n 0..1 arrays with every element equal to 0, 1 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =5a(2) =29a(3) =203a(4) =1961a(5) =46079a(6) =1454613a(7) =62334085a(8) =3652793090a(9) =396573816796
External references
- oeis: A301878