Number of (7+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7.
A252414
Number of (7+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7.
Terms
- a(0) =1529a(1) =10129a(2) =50675a(3) =113146a(4) =762761a(5) =3896844a(6) =8765249a(7) =58862703a(8) =301012112a(9) =677233859a(10) =4545779778a(11) =23255945341a(12) =52314474379a(13) =351180950068
External references
- oeis: A252414