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A126259 Numbers that are divisible by the number of letters in their English name, excluding spaces and hyphens;. 2
4, 6, 12, 30, 33, 36, 40, 45, 50, 54, 56, 60, 70, 81, 88, 90, 100, 108, 132, 154, 184, 190, 200, 204, 252, 253, 264, 276, 286, 288, 299, 300, 304, 306, 325, 336, 338, 340, 360, 378, 418, 420, 462, 475, 480, 504, 510, 520, 575, 576, 580, 600, 651, 667, 682, 702 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
This version uses the British English convention of including "and"; see A092320 for the American English version. - Michael S. Branicky, Apr 07 2023
LINKS
EXAMPLE
The word "sixty" has 5 letters and 60 is divisible by 5 (60/5=12), so 60 is included in the list.
"one hundred and eight" has 18 letters and 18*6 = 108, so 108 is a term.
PROG
(Python)
from num2words import num2words
def letts(n): return sum(1 for c in num2words(n) if c.isalpha())
def ok(n): return n and n%letts(n) == 0
print([k for k in range(1000) if ok(k)]) # Michael S. Branicky, Apr 07 2023
CROSSREFS
Sequence in context: A294489 A344995 A115076 * A068570 A092320 A056495
KEYWORD
nonn,word
AUTHOR
Jonathan R. Love (japanada11(AT)yahoo.ca), Mar 08 2007
EXTENSIONS
Corrected and extended by Sean A. Irvine, Mar 15 2010
STATUS
approved

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)