Number of nX5 0..3 arrays x(i,j) with each element horizontally, vertically 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.
A230907
Number of nX5 0..3 arrays x(i,j) with each element horizontally, vertically 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) =84a(2) =634a(3) =4308a(4) =30304a(5) =219696a(6) =1603356a(7) =11727974a(8) =85870504a(9) =629050716a(10) =4609162588a(11) =33775007838a(12) =247504872508
External references
- oeis: A230907