A031206 - OEIS

%I #11 Feb 16 2025 08:32:36

%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="https://mathworld.wolfram.com/Digitaddition.html">Digitaddition</a>

%K nonn,base,changed

%O 1,1

%A _Eric W. Weisstein_