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Beginning with 1, numbers such that no term can arise as a substring of the right concatenation of any combination of the previous terms.
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%I #4 Dec 05 2013 19:56:47

%S 1,2,3,4,5,6,7,8,9,10,20,30,40,50,60,70,80,90,100,111,200,221,223,224,

%T 225,226,227,228,229,300,400,500,600,700,800,900,1000,1331,1332,1333,

%U 1334,1335,1336,1337,1338,1339,1441,1442,1443,1444,1445,1446,1447,1448

%N Beginning with 1, numbers such that no term can arise as a substring of the right concatenation of any combination of the previous terms.

%e 11 is not a member as it can be obtained as a substring of the concatenation of previous terms 1 and 10.

%K base,less,nonn

%O 1,2

%A _Amarnath Murthy_, Apr 07 2004

%E Corrected and extended by _David Wasserman_, Oct 02 2006