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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.

A233185 a(n) is the least number larger than the total number of letters in the French names for all terms up to and including a(n).

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%I A233185 #22 Dec 23 2024 14:53:43
%S A233185 5,9,15,20,29,39,50,60,68,80,96,100,108,119,130,145,160,175,196,206,
%T A233185 220,236,256,279,300,301,315,330,350,369,395,409,428,450,469,496,506,
%U A233185 520,536,556,579,600,601,606,620,635,655,676,700,701,706,720,736,756,776,800,801,806,820,836,856,879,900,901,910,926,945,965,988
%N A233185 a(n) is the least number larger than the total number of letters in the French names for all terms up to and including a(n).
%C A233185 French version of A233184. See A233186 for a variant using weak inequality, "not smaller" instead of "larger", in the definition. In the English case this would only affect the first 4 terms, but not so in the French version.
%C A233185 See A233187-A233188 for German variants.
%H A233185 E. Angelini, <a href="https://web.archive.org/web/*/http://list.seqfan.eu/oldermail/seqfan/2013-December/012058.html">Cumulative quantity of letters used in a list of English number-names</a>, SeqFan list, Dec 05 2013
%H A233185 E. Angelini, <a href="/A233185/a233185.txt">Cumulative quantity of letters used in a list of English number-names</a>, SeqFan list, Dec 05 2013 [Cached copy, pdf file]
%e A233185 The total length up to a(n), followed by the name of a(n), is as follows:
%e A233185 4 (cinq), 8 (neuf), 14 (quinze), 19 (vingt), 28 (vingt-neuf), 38 (trente-neuf), 47 (cinquante), 55 (soixante), 67 (soixante-huit), 79 (quatre-vingts), 95 (quatre-vingt-seize), 99 (cent), 107 (cent huit), 118 (cent dix-neuf), 128 (cent trente), 144 (cent quarante-cinq), ...
%o A233185 (PARI) a=0;k=0;for(n=1,99,until( k++ > a + A167507(k),); print1(k","); a+=A167507(k))
%o A233185 (PARI) a=k=0;for(n=1,99,until( k++ > a + A167507(k),); print1(a+=A167507(k)," ("French(k)"), ")) \\ to print the total length + name of a(n), see A167507 for French().
%K A233185 nonn,word
%O A233185 1,1
%A A233185 _Eric Angelini_ and _M. F. Hasler_, Dec 05 2013