Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #9 Apr 19 2016 01:07:32
%S 429552,497808,800496,2472912,3329712,4925808,5033808,5470632,5756616,
%T 7584408,7696368,8498952,13172000,14484816,16112304,17901936,18349776,
%U 20867184,21395600,21895920,22581000,24395200,24805872,27369900
%N Minimal elements of pairs of "(-1)sigma amicable numbers", sorted by their minimal elements.
%F (-1)sigma(a) = (-1)sigma(b) = a+b where a<b. Here (-1)sigma(n) = A049060(n): If n = Product p(i)^r(i) then (-1)sigma(n) = Product(-1+Sum p(i)^s, s=1 to r(i)). This sequence gives the values of a; A051594 gives the values of b.
%Y Cf. A051594, A049060.
%K nonn
%O 0,1
%A _Yasutoshi Kohmoto_
%E Edited by _Dean Hickerson_, Nov 06 2006
%E More terms from _Max Alekseyev_, Jan 31 2010