Number of nX7 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.
A230909
Number of nX7 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) =882a(2) =11324a(3) =130178a(4) =1603356a(5) =20713786a(6) =271505344a(7) =3573938648a(8) =47146678686a(9) =622659105328
External references
- oeis: A230909