Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 1 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 1 3 4 6 or 7.
A252206
Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 1 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 1 3 4 6 or 7.
Terms
- a(0) =19794a(1) =44322a(2) =332462a(3) =1180226a(4) =11207238a(5) =84935426a(6) =301990806a(7) =2868905558a(8) =21743274306a(9) =77309414066a(10) =734439412518
External references
- oeis: A252206