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A037196 Number of vowels in the American English name of n. 4


%S 2,2,1,2,2,2,1,2,2,2,1,3,2,3,4,3,3,4,4,3,1,3,2,3,3,3,2,3,3,3,1,3,2,3,

%T 3,3,2,3,3,3,1,3,2,3,3,3,2,3,3,3,1,3,2,3,3,3,2,3,3,3,1,3,2,3,3,3,2,3,

%U 3,3,2,4,3,4,4,4,3,4,4,4,2,4,3,4,4,4,3,4,4,4,2,4,3,4,4,4,3,4,4,4,4,6,5,6,6

%N Number of vowels in the American English name of n.

%C "American English" means that there is no "and" in the names of numbers, cf. example. - _M. F. Hasler_, Aug 26 2020

%e a(20) = 1 for "twEnty" with 1 vowel: 'y' does not count.

%e a(101) = 6 for "OnE hUndrEd OnE" with 6 vowels: no "and" as in the "British" variant "one hundred and one" which would have 7 vowels.

%o (PARI) vowels=Vec("aeiou"); apply( {A037196(n)=#[c|c<-Vec(English(n)),setsearch(vowels,c)]}, [0..104]) \\ see A052360 for English(). - _M. F. Hasler_, Aug 26 2020

%Y Cf. A005589, A052360 (number of letters in English name of numbers with/without spaces and dashes).

%Y Sequences related to vowels: A102869, A158352, A158354 (smallest number with n [distinct] vowels in AE / BE), A158353, A158355 (ditto, increasing), A058179 (all 5 vowels), A058180 (ditto, exactly once), A000852, A000861 (start/end with vowel), A019270, A080518 (self-describing), A059437, A079741, A152592, A174879, A241858, A332068, A332069.

%K nonn,word,easy

%O 0,1

%A _N. J. A. Sloane_.

%E More terms from Larry Reeves (larryr(AT)acm.org), Sep 25 2000

%E Name edited and crossrefs added by _M. F. Hasler_, Aug 26 2020

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Last modified September 22 06:53 EDT 2020. Contains 337289 sequences. (Running on oeis4.)