Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to at least one vertical or antidiagonal neighbor and the top left element equal to 0.
A268161
Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to at least one vertical or antidiagonal neighbor and the top left element equal to 0.
Terms
- a(0) =0a(1) =6a(2) =36a(3) =906a(4) =31818a(5) =770406a(6) =28194516a(7) =857204082a(8) =29334686760a(9) =981701367120
External references
- oeis: A268161