Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.
A252330
Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.
Terms
- a(0) =10227a(1) =9142a(2) =22016a(3) =63277a(4) =214176a(5) =632453a(6) =1835652a(7) =6821035a(8) =20633429a(9) =59088476a(10) =219803901a(11) =667481680a(12) =1914981833a(13) =7126650000a(14) =21591653297a(15) =61998441904a(16) =231093549133a(17) =698634345021
External references
- oeis: A252330