This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A166731 #2 Mar 30 2012 17:36:45
%S A166731 100,200,300,400,500,600,700,800,900,1000,1100,1200,1300,1400,1500,
%T A166731 1600,1700,1800,1900,2000,2100,2200,2300,2400,2500,2600,2700,2800,
%U A166731 2900,3000,3100,3200,3300,3400,3500,3600,3700,3800,3900,4000,4100,4200,4300,4400
%N A166731 Positive integers with English names ending in "d".
%C A166731 To avoid ambiguity, the American system is used here; i.e., no names such as "milliard" or "billiard".
%C A166731 Different from multiples of 100 (see example) and from A044332 (10100 is a term of the present sequence). In fact, if all names of multiples of a million are considered to end with an "n" (even beyond the usual naming system: see A146755 for links), those numbers are terms of A060228, not this sequence, meaning this sequence is precisely {positive multiples of 100} MINUS {(positive) multiples of 1000000}.
%e A166731 One hundred (100) is a term; one million (1000000) is not a term (but is a term of A060228).
%Y A166731 Cf. A166726, A166727, A166728, A166729, A166730, A059093, A060228.
%K A166731 easy,nonn,word
%O A166731 1,1
%A A166731 _Rick L. Shepherd_, Oct 20 2009