Rectangular array read R by antidiagonals: R(i,j) = number of integers k that divide both i and j (i >= 1, j >= 1).
1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 3, 1, 2, 1, 1, 1, 2, 1, 1, 2
2 seqfan posts
Wed Apr 8 20:37:12 CEST 2009 [seqfan] Re: Wrong Formula?