Sum of distinct distances between n non-attacking rooks over all n X n chessboards.
A306272
Sum of distinct distances between n non-attacking rooks over all n X n chessboards.
Terms
- a(0) =0a(1) =2a(2) =12a(3) =78a(4) =686a(5) =6056a(6) =59002a(7) =616522a(8) =7009264a(9) =86023126
External references
- oeis: A306272