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%I #15 Feb 27 2020 22:50:10
%S 26,6,19,20,6,6,19,19,5,14,20,5,20,20,6,6,19,19,5,14,20,20,20,20,20,
%T 20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,6,6,6,6,6,6,6,6,6,6,6,6,
%U 6,6,6,6,6,6,6,6,19,19,19,19,19,19,19,19,19,19,19,19
%N Position of the first letter of n-th (in English) in the alphabet.
%e 'First' begins with 'F', the sixth letter, hence a(1)=6.
%t a[n_] := LetterNumber @ Characters[IntegerName[n, {"English","Ordinal"}]][[1]]; Array[a, 100, 0] (* _Amiram Eldar_, Jan 18 2020 *)
%o (Python)
%o from num2words import num2words
%o import unidecode
%o def A311481(n):
%o return ord(unidecode.unidecode(num2words(n, to='ordinal')).lower()[0]) - 96 # _Chai Wah Wu_, Feb 27 2020
%Y Cf. A005606 (analog for cardinal numbers).
%K nonn,word
%O 0,1
%A _J. Marcel Feenstra_, Jan 18 2020
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