T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum.
A257017
T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum.
Terms
- a(0) =15066a(1) =311364a(2) =311364a(3) =6508512a(4) =14776336a(5) =6508512a(6) =136048896a(7) =717382656a(8) =717382656a(9) =136048896a(10) =2834352000a(11) =34828517376a(12) =82198167552a(13) =34828517376a(14) =2834352000a(15) =59049000000
External references
- oeis: A257017