%I #11 Dec 04 2019 10:01:45
%S 2,12,14,30,42,56,78,140,168,190,248,264,270,418,570,594,616,630,714,
%T 744,812,840,910,1240,1254,1672,1848,2214,2376,2436,2580,2730,3080,
%U 3596,3720,3828,3956,4064,4180,4522,4674,5016,5278,5396,5544,6426,6678
%N Balanced numbers k such that 2*k is not a balanced number (k is in A020492, 2*k is not).
%H Amiram Eldar, <a href="/A076484/b076484.txt">Table of n, a(n) for n = 1..10000</a> (calculated using data from Jud McCranie)
%F sigma(k)/phi(k) is integer, sigma(2*k)/phi(2*k) is not.
%e k = 12, 2*k = 24: sigma(12)/phi(12) = 28/4 = 7, while sigma(24)/phi(24) = 60/8 = 15/2.
%Y Cf. A020492, A000203, A000010, A076375, A076376, A076377.
%K nonn
%O 1,1
%A _Labos Elemer_, Oct 15 2002