%I #7 Feb 19 2022 10:37:41
%S 0,2,4,7,9,11,12,14,15,17,19,21,22,24,27,29,40,43,45,46,48,50,53,55,
%T 56,58,60,63,65,66,68,70,78,80,81,83,85,86,88,90,98,100,101,103,105,
%U 106,108,110,118,120,123,125,126,128,300,301,303,305,306,308,310
%N Numbers which, when written in French, contain exactly one instance of the letter E.
%C ZERO(0) has one E (and is thus in the sequence), UN(1) has no E, DEUX(2) has one, TROIS(3) has none, QUATRE(4) has one E (and is thus in the sequence). etc.
%o (Python)
%o from num2words import num2words
%o from unidecode import unidecode
%o def ok(n): return unidecode(num2words(n, lang='fr')).count("e") == 1
%o print([k for k in range(311) if ok(k)]) # _Michael S. Branicky_, Feb 19 2022
%Y Cf. A006933 ('Eban' numbers), A349887 (exactly one instance in English), A349888 (exactly two instances in English),
%K nonn,word,less
%O 1,2
%A _Carole Dubois_ and _Eric Angelini_, Feb 19 2022