Number of 4Xn 0..3 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero.
A231287
Number of 4Xn 0..3 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero.
Terms
- a(0) =0a(1) =0a(2) =66a(3) =1170a(4) =34786a(5) =1083188a(6) =31513702a(7) =918670552a(8) =26923332502a(9) =788665534214
External references
- oeis: A231287