Number of (n+2)X(1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 3 6 or 8.
A252623
Number of (n+2)X(1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 3 6 or 8.
Terms
- a(0) =4508a(1) =17704a(2) =81098a(3) =405044a(4) =2130874a(5) =11518022a(6) =63438930a(7) =353233466a(8) =1976523666a(9) =11088640448a(10) =62315269254a(11) =350508927020
External references
- oeis: A252623