the n Queens problem

By Hal Canary, 2003-08-03 21:55:51 (link)
#mathematics

Learned a new sequence today: 1, 0, 0, 2, 10, 4, 40, 92, 352, 724, 2680, 14200, 73712, 365596, 2279184, 14772512, 95815104, 666090624, 4968057848, 39029188884, 314666222712, 2691008701644, 24233937684440... There doesn't seem to be a closed form solution to this one.


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