Number of 4 X n arrays containing n copies of 0..4-1 with no element 1 greater than its north, west, northwest or northeast neighbor modulo 4 and the upper left element equal to 0.
A266495
Number of 4 X n arrays containing n copies of 0..4-1 with no element 1 greater than its north, west, northwest or northeast neighbor modulo 4 and the upper left element equal to 0.
Terms
- a(0) =2a(1) =4a(2) =25a(3) =133a(4) =1094a(5) =9358a(6) =101927a(7) =1164886a(8) =16185022a(9) =224916371a(10) =3516365203a(11) =53601466944a(12) =875619141848
External references
- oeis: A266495