A331482 Position of the first letter of n (in Dutch) in the alphabet.

14, 5, 20, 4, 22, 22, 26, 26, 1, 14, 20, 5, 20, 4, 22, 22, 26, 26, 1, 14, 20, 5, 20, 4, 22, 22, 26, 26, 1, 14, 4, 5, 20, 4, 22, 22, 26, 26, 1, 14, 22, 5, 20, 4, 22, 22, 26, 26, 1, 14, 22, 5, 20, 4, 22, 22, 26, 26, 1, 14, 26, 5, 20, 4, 22, 22, 26, 26, 1, 14, 26

Offset: 0

Author

J. Marcel Feenstra, Jan 18 2020

Keywords

• nonn
• word

Examples

			'Een' (Dutch for 'one') begins with 'E', the fifth letter of the alphabet, hence a(1)=5.
		

Links

• Wikibooks, Rekenen/Natuurlijke getallen

Crossrefs

Cf. A005606 (English), A161377 (Spanish), A277685 (Portuguese).

Cf. other Dutch sequences: A090589, A247802.

Programs

Mathematica

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

Python

from num2words import num2words
import unidecode
def A331482(n):
    return ord(unidecode.unidecode(num2words(n, lang='nl')).lower()[0]) - 96 # Chai Wah Wu, Feb 27 2020