a(1) = 2; for n>1, a(n) is smallest number, greater than a(n-1), which is relatively prime to the sum of all previous terms.
2, 3, 4, 5, 9, 10, 13, 15, 16, 17, 19, 20, 22, 23, 25, 26, 27, 29, 31, 33, 34, 35, 37, 38
1 seqfan posts
Mon Aug 31 16:20:13 CEST 2009 [seqfan] Re: Coprime To Sums