Number of (5+2)X(n+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.
A252620
Number of (5+2)X(n+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) =3022a(1) =14435a(2) =51614a(3) =174803a(4) =814008a(5) =3108884a(6) =11582748a(7) =52469568a(8) =201993618a(9) =768890808a(10) =3480326680a(11) =13459054930a(12) =51485158178a(13) =233492157392a(14) =905050919616
External references
- oeis: A252620