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a(1)=1; thereafter a(n) = A169639(a(n-1)).
1

%I #40 Apr 16 2022 04:28:39

%S 1,35,125,157,206,148,197,293,333,286,302,177,246,245,236,230,178,244,

%T 275,295,342,274,326,247,253,281,285,293,333,286,302,177,246,245,236,

%U 230,178,244,275,295,342,274,326,247,253,281,285,293,333,286,302,177,246,245,236,230,178,244,275

%N a(1)=1; thereafter a(n) = A169639(a(n-1)).

%C A French analog of A345126 (British English) and A345157 (US English).

%C Enters a cycle of length 20 starting from a(8). - _Chai Wah Wu_, Jun 12 2021

%e 1 = un -> 35 = trente-cinq -> 125 -> cent vingt cinq = 157.

%t a[1]=1;a[n_]:=a[n]=Total@LetterNumber@StringDelete[IntegerName[a[n-1],"French"],{" ","-"}];Array[a,100] (* _Giorgos Kalogeropoulos_, Jun 11 2021 *)

%o (Python)

%o from num2words import num2words

%o from unidecode import unidecode

%o A344013_list = [1]

%o for _ in range(10):

%o A344013_list.append(sum(ord(s)-96 for s in unidecode(num2words(A344013_list[-1],lang='fr')) if s.isalpha())) # _Chai Wah Wu_, Jun 11 2021

%Y Cf. A073327, A169639, A345240, A345126, A345157.

%K nonn,word

%O 1,2

%A _Simon Plouffe_ and _N. J. A. Sloane_, Jun 10 2021

%E More terms from _Chai Wah Wu_, Jun 11 2021

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Last modified September 20 11:28 EDT 2024. Contains 376068 sequences. (Running on oeis4.)