Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 3 6 or 7.
A252525
Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 3 6 or 7.
Terms
- a(0) =750a(1) =595a(2) =460a(3) =535a(4) =546a(5) =649a(6) =823a(7) =1036a(8) =1328a(9) =1756a(10) =2254a(11) =2949a(12) =3882a(13) =5007a(14) =6535a(15) =8608a(16) =11078a(17) =14439a(18) =18930a(19) =24343a(20) =31630a(21) =41368a(22) =53110a(23) =68859a(24) =89778a(25) =115127a(26) =148930a(27) =193720a(28) =248118a(29) =320379
External references
- oeis: A252525