Number of (5+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 4 6 or 7.
A252563
Number of (5+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 4 6 or 7.
Terms
- a(0) =2162a(1) =7144a(2) =33635a(3) =80820a(4) =474384a(5) =2464176a(6) =5882014a(7) =35442488a(8) =192831680a(9) =452243221a(10) =2794490907a(11) =15799881103a(12) =36529660074a(13) =230231519250
External references
- oeis: A252563