Number of collinear point 4-tuples in a 6 X 6 X 6 X... n-dimensional cubic grid
0, 15, 234, 2820, 31176, 333840, 3546144, 37807680, 406924416, 443215488
1 seqfan posts
Fri Jun 4 18:01:20 CEST 2010 [seqfan] Re: 3D version of A000938: 3-in-line inside the nXnXn cube