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%I #16 Jul 15 2015 18:03:06
%S 220,1184,2620,5020,6232,10744,12285,17296,66928,67095,63020,69615,
%T 79750,100485,122368,122265,141664,142310,171856,176272,185368,196724,
%U 280540,308620,319950,356408,437456,469028,503056,522405,600392,609928,643336,624184,635624,667964,726104,802725,879712,898216,998104,947835
%N Smaller of amicable pair (x, y) as they are listed in A259933.
%C Another version of A002025.
%C First differs from A002025 at a(9).
%H Laszlo Hars, <a href="https://www.mail-archive.com/julia-users@googlegroups.com/msg04022.html">Performance compared to mathematica</a> Julia-users (2014)
%H Khelleos, <a href="http://www.cyberforum.ru/lisp/thread386611.html">Amicable numbers</a>, CyberForum.ru (2011)
%H OEIS Wiki, <a href="https://oeis.org/wiki/Amicable_numbers">Amicable numbers</a> (This page needs work)
%H Wikipédia, <a href="https://hu.wikipedia.org/wiki/Barátságos_számok">Barátságos számok</a> (contains a mistake: A063990 should be replaced with A259933)
%F a(n) = A259933(2n-1) = A259953(n) - A259933(2n) = A259953(n) - A260087(n).
%Y Cf. A002025, A063990, A259180, A259933, A259953, A260087.
%K nonn
%O 1,1
%A _Omar E. Pol_, Jul 15 2015
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