Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 3 4 6 or 7.
A252125
Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 3 4 6 or 7.
Terms
- a(0) =1214a(1) =5622a(2) =25017a(3) =44895a(4) =263585a(5) =1322632a(6) =2216594a(7) =14725300a(8) =78319500a(9) =126119849a(10) =891349127a(11) =4860491003a(12) =7690347441a(13) =55811257617a(14) =307377614835a(15) =482854484302
External references
- oeis: A252125