Number of n X 2 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) (1,-1) or (1,0), with upper left element zero.
A278267
Number of n X 2 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) (1,-1) or (1,0), with upper left element zero.
Terms
- a(0) =0a(1) =4a(2) =47a(3) =395a(4) =3453a(5) =30475a(6) =268257a(7) =2360984a(8) =20781746a(9) =182923358a(10) =1610107387a(11) =14172312272a(12) =124745996060
External references
- oeis: A278267