Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.
A252164
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.
Terms
- a(0) =12522a(1) =3749a(2) =9178a(3) =26129a(4) =90638a(5) =282255a(6) =874123a(7) =3133532a(8) =9855158a(9) =31190308a(10) =113533703a(11) =358503838a(12) =1162386053a(13) =4246934635a(14) =13490550259a(15) =44489156575a(16) =163191377759a(17) =519719587757
External references
- oeis: A252164