Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 4 6 or 7.

A252364

Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 4 6 or 7.

Terms

    a(0) =282a(1) =834a(2) =3054a(3) =10450a(4) =36078a(5) =124538a(6) =427362a(7) =1470006a(8) =5070814a(9) =17463766a(10) =60088290a(11) =206866218a(12) =712422522a(13) =2453110742a(14) =8445738678a(15) =29078502866a(16) =100122283738a(17) =344737651282

External references