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%I #4 Jun 04 2021 04:44:12
%S 6,10,18,21,24,26,28,34,36,39,40,50,55,57,58,60,66,68,74,75,78,82,88,
%T 92,93,96,98,100,105,106,111,120,122,124,126,129,132,136,138,144,146,
%U 147,150,153,155,156,160,162,164,168,171,176,178,183,188,189,190,194,196,198,201,202,203,205,208,210,216,218,219,222
%N Numbers k that have such a proper divisor d for which A011772(d) = A011772(k).
%Y Cf. A011772, A344590, A344759.
%K nonn
%O 1,1
%A _Antti Karttunen_, Jun 01 2021
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