Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally and vertically.
A254477
Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally and vertically.
Terms
- a(0) =2696a(1) =11293a(2) =50454a(3) =170900a(4) =603895a(5) =1990286a(6) =6557179a(7) =20990158a(8) =66511881a(9) =206889218a(10) =638407700a(11) =1953110307a(12) =5950273442a(13) =18061423893a(14) =54710654569a(15) =165447019004a(16) =499781356823
External references
- oeis: A254477