Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 4 6 or 7.
A252101
Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 4 6 or 7.
Terms
- a(0) =10605a(1) =8941a(2) =26996a(3) =86575a(4) =329544a(5) =1129324a(6) =3681127a(7) =14793289a(8) =52094021a(9) =172583949a(10) =707808775a(11) =2531864488a(12) =8516600464a(13) =35467808026a(14) =128320430941a(15) =436331640909
External references
- oeis: A252101