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A102082
Number of times the n-th letter in an infinitely repeating English alphabet appears in the US English name for the number n.
1
0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 2, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 2, 0, 0, 0, 0, 0, 2, 0, 0, 2, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 2, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 3, 1, 1, 1
OFFSET
0,21
LINKS
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
Sequence in context: A336757 A116376 A165766 * A358434 A030199 A320005
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