Number of (n+2)X(4+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 2 4 5 7 or 9.
A251648
Number of (n+2)X(4+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 2 4 5 7 or 9.
Terms
- a(0) =1248a(1) =4008a(2) =9918a(3) =24706a(4) =98306a(5) =245842a(6) =610082a(7) =2470626a(8) =6167962a(9) =15277218a(10) =62704418a(11) =156357898a(12) =386711138a(13) =1602835938a(14) =3993364042a(15) =9866146146a(16) =41180644322a(17) =102536539882a(18) =253140113186
External references
- oeis: A251648