OFFSET
0,21
LINKS
Michael S. Branicky, Table of n, a(n) for n = 0..10000
EXAMPLE
a(5) = 1 since letter 5 = e appears once in "five".
a(20) = 2 since letter 20 = t appears twice in "twenty".
a(34) = 1 since letter 34 = h appears once in "thirty four".
a(105) = 0 since letter 105 = a does not appear in "one hundred five".
a,b,c,... z, a, b, ... .
1,2,3,...26,27,28, ... .
PROG
(Python)
from num2words import num2words
def a(n): return num2words(n).replace(" and", "").count(chr(96+n%26))
print([a(n) for n in range(87)]) # Michael S. Branicky, Jul 15 2022
CROSSREFS
KEYWORD
nonn,word
AUTHOR
Jeremy Ballard (gtg056b(AT)prism.gatech.edu), Feb 13 2005
EXTENSIONS
Name clarified, a(0) inserted, and a(34) and beyond from Michael S. Branicky, Jul 15 2022
STATUS
approved