Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 8 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 8.
A252611
Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 8 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 8.
Terms
- a(0) =3235a(1) =6019a(2) =17762a(3) =43595a(4) =174803a(5) =617798a(6) =1597203a(7) =6498007a(8) =23325496a(9) =60375689a(10) =244646507a(11) =882016384a(12) =2281459715a(13) =9221889835a(14) =33378653472a(15) =86302253259a(16) =348152552483
External references
- oeis: A252611