I wrote, in-part: >.... >f(1) = 1; > >f(m) = sum{k|m, k not among {f(1),f(2),...,f(m-1)}} (m/k) > >1, 1, 1, 3, 1, 4, 1, 5, 1, 6, 1, 7,... >.... I just realized that this follows the simple pattern of ..., 1, k, 1, k+1, 1, k+2, 1,... Sorry about that. (I still think the c-sequence is interesting, however.) :) thanks, Leroy Quet