Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum not 2 4 5 or 7 and every diagonal and antidiagonal sum 2 4 5 or 7.

A251873

Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum not 2 4 5 or 7 and every diagonal and antidiagonal sum 2 4 5 or 7.

Terms

    a(0) =11008a(1) =36852a(2) =18464a(3) =31520a(4) =107040a(5) =151704a(6) =267872a(7) =924272a(8) =1402224a(9) =2561696a(10) =8530512a(11) =14524200a(12) =26353888a(13) =85112336a(14) =160905480a(15) =290357600a(16) =904363728a(17) =1882285416a(18) =3363389920a(19) =10173378704a(20) =22821398088a(21) =40487475296a(22) =119653971792

External references