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这题太帝国主义了

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Leokery | 2017-10-17 18:59:54 | delete | edit
http://oeis.org/A140646

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A140646		 Number of stars on the flag of the United States as it has changed over the years since 1775.		 2
0, 13, 15, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 43, 44, 45, 46, 48, 49, 50 (list; graph; refs; listen; history; text; internal format)
OFFSET	
1,2
COMMENTS	
The flag is also known as the Stars and Stripes, Old Glory and the Star-Spangled Banner.
The proportions of the flag are 10 X 19.
LINKS	
Table of n, a(n) for n=1..28.
USHistory.org, Flag Timeline.
Wikipedia, Flag of the United States
Wikipedia, Flag Acts (United States)
EXAMPLE	
In 2008 the flag has 50 stars and 13 stripes.
CROSSREFS	
Cf. A053726.
Sequence in context: A126727 A257492 A067912 * A109656 A178724 A087814
Adjacent sequences:  A140643 A140644 A140645 * A140647 A140648 A140649
KEYWORD	
nonn
AUTHOR	
Lane A. Phillips (lanephillips(AT)gmail.com), Jul 09 2008
EXTENSIONS	
Edited by N. J. A. Sloane, Jul 31 2008
STATUS	
approved 

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