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%I #10 Apr 15 2020 00:23:22
%S 19,34,43,91,109,127,172,190,217,247,271,274,304,334,340,343,349,388,
%T 394,403,427,430,433,439,472,493,568,586,658,685,712,721,724,742,838,
%U 856,865,883,901,910,934,943,1009,1027,1072,1090,1114,1141
%N Numbers having period-21 7-digitized sequences.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Digitaddition.html">Digitaddition</a>
%K nonn,base
%O 1,1
%A _Eric W. Weisstein_
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