Number of nX7 0..2 arrays with top left element 0, horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and antidiagonal differences never 0.
A229401
Number of nX7 0..2 arrays with top left element 0, horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and antidiagonal differences never 0.
Terms
- a(0) =64a(1) =610a(2) =6604a(3) =75965a(4) =899860a(5) =10826489a(6) =131393852a(7) =1602580515a(8) =19601243880a(9) =240116025296
External references
- oeis: A229401