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A014254 Liponombres: numbers whose French name does not contain the letter "e". 6
1, 3, 5, 6, 8, 10, 18, 20, 23, 25, 26, 28, 1000000, 1000001, 1000003, 1000005, 1000006, 1000008, 1000010, 1000018, 1000020, 1000023, 1000025, 1000026, 1000028, 3000000, 3000001, 3000003, 3000005, 3000006, 3000008, 3000010 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
In French also called: les nombres "évites" ou "apparés".
Could also be called les nombres "epers". - Benoit Cloitre, May 05 2003
French version of eban numbers (A006933): no "e" in name of number in French - "e" perd ("e" lost)!
REFERENCES
Georges Perec, La disparition, Editions Gallimard, Paris, 1969; English translation: A Void, Harvill, 1994. (A novel that does not use the letter "e". These numbers are not mentioned, however.)
LINKS
N. Graner, Liponombres [<<Un lipogramme est un texte dans lequel l'auteur s'astreint à ne pas utiliser une ou plusieurs lettres de l'alphabet, le plus souvent la lettre E. Par analogie, nous avons choisi d'appeler « liponombre » tout nombre dont le nom ne comporte pas la lettre E. Nous étudions dans cet article quelques propriétés de l'ensemble des liponombres.>>]
EXAMPLE
a(1) = 1 ("un"), a(2) = 3 ("trois", not "dEux")
PROG
(PARI) is_A014254(n)=!setsearch(Set(Vec(French(n))), "e") \\ See A167507 for French(). - M. F. Hasler, Nov 11 2015
CROSSREFS
Sequence in context: A084810 A364731 A268896 * A131422 A301744 A087720
KEYWORD
nonn,word,fini
AUTHOR
EXTENSIONS
Additional comments from Bruno Salvy (Bruno.Salvy(AT)inria.fr) and Nicolas Graner (Nicolas.Graner(AT)cri.u-psud.fr), May 11 2003
Corrected by Don Reble, Nov 19 2006
Edited by M. F. Hasler, Nov 11 2015
STATUS
approved

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Last modified June 15 06:51 EDT 2024. Contains 373402 sequences. (Running on oeis4.)