login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A372204
a(n) is the number of letters in the Italian name of the n-th ordinal number.
1
5, 7, 5, 6, 6, 5, 7, 6, 4, 6, 10, 10, 11, 15, 12, 10, 15, 12, 14, 9, 11, 12, 13, 16, 15, 13, 14, 12, 13, 10, 12, 13, 14, 17, 16, 14, 15, 13, 14, 12, 14, 15, 16, 19, 18, 16, 17, 15, 16, 13, 15, 16, 17, 20, 19, 17, 18, 16, 17, 12, 14, 15, 16, 19, 18, 16, 17, 15, 16, 12
OFFSET
1,1
LINKS
EXAMPLE
Primo, secondo, terzo, quarto, quinto, sesto, settimo, ottavo, nono, ...
PROG
(Python)
from num2words import num2words
def A372204(n): return len(num2words(n, ordinal=True, lang='it')) # Chai Wah Wu, Apr 28 2024
CROSSREFS
Sequence in context: A011205 A167133 A144567 * A215732 A010718 A247872
KEYWORD
nonn,word
AUTHOR
Stefano Spezia, Apr 27 2024
EXTENSIONS
a(17), a(19) corrected by Chai Wah Wu, Apr 28 2024
STATUS
approved