Number of ways of placing kings with no more than 3 mutual attacks on an n X n chessboard symmetric about main diagonal.
A143883
Number of ways of placing kings with no more than 3 mutual attacks on an n X n chessboard symmetric about main diagonal.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =29a(4) =160a(5) =1135a(6) =10529a(7) =125770a(8) =1963039a(9) =39868375a(10) =1061669314a(11) =37110747097
External references
- oeis: A143883