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%I #10 Oct 12 2019 15:22:17
%S 0,1,2,3,4,5,6,7,8,9,10,11,12,13,15,20,30,40,50
%N Numbers containing no smaller numbers when written as English number names.
%C The sequence is finite as long as there are stable principles in the procedure for naming numbers in English.
%H Wikipedia, <a href="http://en.wikipedia.org/wiki/Names_of_large_numbers">Names of large numbers</a>
%H Robert G. Wilson v, <a href="/A000027/a000027.txt">English names for the numbers from 0 to 11159 without spaces or hyphens</a>
%H <a href="/index/Na">Index entries for sequences related to names of numbers</a>
%F A159451(a(n)) = 0.
%Y Cf. A159451.
%K fini,full,nonn,word
%O 1,3
%A _Reinhard Zumkeller_, Apr 12 2009