A195897 Number of ways to place a queen, a rook, a bishop, a knight and a king on an n X n chessboard such that each piece attacks the same number of unoccupied spaces.

28, 39, 90, 63, 64, 197, 15, 7, 5, 1

Offset: 4

Author

Kausthub Gudipati, Sep 25 2011

Keywords

• fini
• full
• nonn

Examples

			There are 64 ways to place 5 different chess pieces on an 8 X 8 chessboard with the above condition.
An example for a 4 X 4 board is
  ...Q
  ..NK
  B...
  R...
		

Links

• Erich Friedman, Problem of the month July 2011