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 A268544 #10 Mar 25 2025 17:17:31
%S A268544 17,73,77,103,107,112,113,114,115,116,121,125,128,129,133,137,143,147,
%T A268544 153,157,163,167,170,172,174,176,181,185,188,189,191,195,198,199,211,
%U A268544 218,219,223,227,271,275,278,279,283,287,293,297,301,305,308,309,310,320
%N A268544 Numbers whose name in American English has exactly four e's.
%C A268544 Arose in discussion of A268236.
%H A268544 Michael S. Branicky, <a href="/A268544/b268544.txt">Table of n, a(n) for n = 1..10000</a>
%H A268544 Robert G. Wilson v, <a href="/A001477/a001477.txt">American English names for the numbers from 0 to 100999 without spaces or hyphens</a>
%e A268544 17 is a term because seventeen has four e's.
%o A268544 (Python)
%o A268544 from num2words import num2words
%o A268544 def ok(n): return num2words(n).count('e') == 4
%o A268544 print([k for k in range(321) if ok(k)]) # _Michael S. Branicky_, Mar 25 2025
%Y A268544 Cf. A001477, A268236.
%K A268544 nonn,word
%O A268544 1,1
%A A268544 _N. J. A. Sloane_, Feb 07 2016
%E A268544 a(35) and beyond from _Michael S. Branicky_, Mar 25 2025