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%I #27 Jun 21 2024 15:30:55
%S 11,17,21,22,23,24,25,26,28,29,31,32,33,34,35,36,38,39,41,42,43,44,45,
%T 46,48,49,51,52,53,54,55,56,58,59,61,62,63,64,65,66,68,69,70,81,82,83,
%U 84,85,86,88,89,91,92,93,94,95,96,98,99,100,200,300,400,500,600,800,900
%N Numbers whose American English name has exactly three syllables.
%C There are 107 terms, considering all terms up to 10^66 using English names of large numbers and various conventional extensions thereof (see Wikipedia link), since quadrillion, quintillion, etc. each have three or more syllables themselves. Terms like "one googol" (or possibly "a googol"), "two googol," ..., "twelve googol" are unconventional, hence disallowed. - _Michael S. Branicky_, May 28 2024
%H Michael S. Branicky, <a href="/A372807/b372807.txt">Table of n, a(n) for n = 1..107</a>
%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Names_of_large_numbers">Names of Large Numbers</a>
%F A075774(a(n)) = 3. - _Michael S. Branicky_, May 27 2024
%e a(2) = 17 is the second number whose name in American English has exactly three syllables: "seventeen".
%o (Python) # uses function in A075774
%o print([k for k in range(501) if A075774(k) == 3]) # _Michael S. Branicky_, May 27 2024
%Y Cf. A075774, A180961.
%K nonn,easy,fini,full,word,less
%O 1,1
%A _Marc Groz_, May 13 2024