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”).

A030166
Number of strokes in Chinese characters for n; also number of strokes in Japanese kanji characters for n.
7
13, 1, 2, 3, 5, 4, 4, 2, 2, 2, 2, 3, 4, 5, 7, 6, 6, 4, 4, 4, 4, 5, 6, 7, 9, 8, 8, 6, 6, 6, 5, 6, 7, 8, 10, 9, 9, 7, 7, 7, 7, 8, 9, 10, 12, 11, 11, 9, 9, 9, 6, 7, 8, 9, 11, 10, 10, 8, 8, 8, 6, 7, 8, 9, 11, 10, 10, 8, 8, 8, 4, 5, 6, 7, 9, 8, 8, 6, 6, 6, 4, 5, 6, 7, 9, 8, 8, 6, 6, 6, 4, 5, 6, 7, 9, 8, 8, 6, 6, 6, 7
OFFSET
0,1
COMMENTS
From Benjamin M. Covert, Oct 30 2018: (Start)
Numbers on the interval of n [200,299] use the "er" (二) form rather than the "liang" (两) form.
Numbers for n = 100m + c where m is a whole number and c is on the interval [1,9] have a "ling" (零) after the "bai" (百) adding 13 additional strokes. (End)
LINKS
Hunter N. Ratliff, Table of n, a(n) for n = 0..20000 (first 301 terms from Benjamin M. Covert)
EXAMPLE
The Chinese number 15 (十五) takes 6 strokes to write so a(15) = 6
PROG
(Python)
from num2words import num2words
def A030166(n):
kanji=['一', '二', '三', '四', '五', '六', '七', '八', '九', '十', '百', '千', '万', '億', '兆', '京', '垓', '秭', '穣', '溝', '澗', '正', '載', '極', '零']
strokes=[1, 2, 3, 5, 4, 4, 2, 2, 2, 2, 6, 3, 3, 15, 6, 8, 9, 10, 18, 13, 15, 5, 13, 12, 13]
return sum([strokes[kanji.index(i)] for i in num2words(n, lang='ja')]) # Hunter N. Ratliff, Feb 29 2020
CROSSREFS
Sequence in context: A066036 A010231 A010230 * A010229 A188888 A089568
KEYWORD
nonn,word
EXTENSIONS
Corrected by Robert Lozyniak (11(AT)onna.com), Oct 22 2001
More terms from Naohiro Nomoto, Oct 23 2001
Extended by Benjamin M. Covert, Oct 30 2018
STATUS
approved