A331481 Position of the first letter of n-th (in English) in the alphabet.

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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19

Offset

0,1

Links

Table of n, a(n) for n=0..71.

Example

'First' begins with 'F', the sixth letter, hence a(1)=6.

Mathematica

a[n_] := LetterNumber @ Characters[IntegerName[n, {"English", "Ordinal"}]][[1]]; Array[a, 100, 0] (* Amiram Eldar, Jan 18 2020 *)

Prog

(Python)
from num2words import num2words
import unidecode
def A311481(n):
    return ord(unidecode.unidecode(num2words(n, to='ordinal')).lower()[0]) - 96 # Chai Wah Wu, Feb 27 2020

Crossrefs

Cf. A005606 (analog for cardinal numbers).

Sequence in context: A040657 A309073 A277215 * A040656 A070661 A040655

Adjacent sequences: A331478 A331479 A331480 * A331482 A331483 A331484

Keyword

nonn,word

Author

J. Marcel Feenstra, Jan 18 2020

Status

approved