Number of (n+2)X(1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 4 or 5.
A251906
Number of (n+2)X(1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 4 or 5.
Terms
- a(0) =9552a(1) =87472a(2) =910694a(3) =9385210a(4) =97416802a(5) =1020849168a(6) =10715275730a(7) =112555491252
External references
- oeis: A251906