Number of ways to place 3 nonattacking queens on a 3 X n board.
0, 0, 0, 0, 4, 14, 36, 76, 140, 234, 364, 536, 756, 1030, 1364, 1764, 2236, 2786, 3420
1 seqfan posts
Fri Jun 4 18:01:20 CEST 2010 [seqfan] Re: 3D version of A000938: 3-in-line inside the nXnXn cube