Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 7.
A252198
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 7.
Terms
- a(0) =2931a(1) =3201a(2) =17541a(3) =92287a(4) =480526a(5) =2547827a(6) =13460703a(7) =71027985a(8) =375675407a(9) =1985308118a(10) =10482759563a(11) =55378851697a(12) =292644335838
External references
- oeis: A252198