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Numbers such that the American English name of the number has four syllables.
3

%I #15 May 27 2024 22:38:34

%S 27,37,47,57,67,71,72,73,74,75,76,78,79,87,97,101,102,103,104,105,106,

%T 108,109,110,112,201,202,203,204,205,206,208,209,210,212,301,302,303,

%U 304,305,306,308,309,310,312,401,402,403,404,405,406,408,409,410,412

%N Numbers such that the American English name of the number has four syllables.

%C There are a finite number of terms, considering all terms up to 10^66 using English names of large numbers and various conventional extensions thereof (see Wikipedia link). - _Michael S. Branicky_, May 27 2024

%H Kyle Stern, <a href="/A180961/b180961.txt">Table of n, a(n) for n = 1..100</a>

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Names_of_large_numbers">Names of Large Numbers</a>

%F A075774(a(n)) = 4. - _Michael S. Branicky_, May 27 2024

%e 27 = "twen-ty sev-en", 101 = "one hun-dred one"

%o (Python) # uses function in A075774

%o print([k for k in range(500) if A075774(k) == 4]) # _Michael S. Branicky_, May 27 2024

%Y Cf. A075774.

%K easy,nonn,fini,word

%O 1,1

%A _Kyle Stern_, Sep 28 2010

%E Corrected by _Kyle Stern_, Sep 30 2010