a(n)=number of arithmetic progressions of 2 or more positive integers, nondecreasing with sum n.
0, 1, 2, 3, 3, 6, 4, 6, 8, 8, 6, 13, 7, 10, 15, 12, 9, 19, 10, 16, 20, 15, 12, 26, 16, 17, 25
1 seqfan posts
Tue Jun 12 02:26:19 CEST 2012 [seqfan] Re: Prime signature of 1, and second signature