T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum unequal to 4 or 5 and every diagonal and antidiagonal sum equal to 4 or 5.

A251905

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum unequal to 4 or 5 and every diagonal and antidiagonal sum equal to 4 or 5.

Terms

    a(0) =1652a(1) =2596a(2) =2596a(3) =3312a(4) =1548a(5) =3312a(6) =5264a(7) =1586a(8) =1586a(9) =5264a(10) =9208a(11) =1962a(12) =1536a(13) =1962a(14) =9208a(15) =16532a(16) =3910a(17) =2772a(18) =2772a(19) =3910a(20) =16532a(21) =23868a(22) =6744a(23) =6408a(24) =4208a(25) =6408a(26) =6744a(27) =23868a(28) =39884a(29) =9830

External references