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, no adjacent elements equal, and upper left element zero.
A231110
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, no adjacent elements equal, and upper left element zero.
Terms
- a(0) =0a(1) =0a(2) =42a(3) =438a(4) =4674a(5) =53530a(6) =616562a(7) =7084870a(8) =81402688a(9) =935286238a(10) =10746062272a(11) =123467810184
External references
- oeis: A231110