Number of (5+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 5 6 or 7.
A252579
Number of (5+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 5 6 or 7.
Terms
- a(0) =2637a(1) =7610a(2) =34532a(3) =88844a(4) =498696a(5) =2538669a(6) =6590930a(7) =37656158a(8) =199331443a(9) =514906002a(10) =2994563004a(11) =16370844276a(12) =42106677118a(13) =248304737187
External references
- oeis: A252579