Number of nX5 0..3 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.
A231060
Number of nX5 0..3 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.
Terms
- a(0) =0a(1) =68a(2) =1272a(3) =27346a(4) =585880a(5) =12582344a(6) =270096962a(7) =5799242344a(8) =124514793312
External references
- oeis: A231060