STATUS
editing
approved
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Revision History for A002964
(Bold, blue-underlined text is an addition; faded, red-underlined text is aShowing entries 1-10 | older changes
Smallest number requiring n chisel strokes for its representation in Roman numerals.
(history; published version)
(history; published version)
STATUS
proposed
approved
STATUS
editing
proposed
EXTENSIONS
For n>13: data corrected and completed upto up to A002963(3888)=34. _ by _Reinhard Zumkeller_, Apr 14 2013
STATUS
approved
editing
STATUS
proposed
approved
STATUS
editing
proposed
COMMENTS
A002963(a(n)) = n. - Reinhard Zumkeller, Apr 14 2013
DATA
1, 2, 3, 7, 8, 17, 18, 27, 28, 37, 38, 87, 88, 187, 188, 287, 288, 387, 388, 788, 887, 888, 1288, 1388, 1788, 1887, 1888, 2288, 2388, 2788, 2887, 2888, 3288, 3388, 3788, 3887, 3888
COMMENTS
C's count as 1 (curved) stroke and D's as 2 strokes. 5000 is V with a line over it, etc.
LINKS
Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/RomanNumerals.html">Roman Numerals</a>
Wikipedia, <a href="http://en.wikipedia.org/wiki/Roman_numerals">Roman numerals</a>
PROG
(Haskell)
a002964 = (+ 1) . fromJust . (`elemIndex` (map a002963 [1..3888]))
-- Reinhard Zumkeller, Apr 14 2013
EXTENSIONS
For n>13: data corrected and completed upto A002963(3888)=34. Reinhard Zumkeller, Apr 14 2013
STATUS
approved
editing
EXTENSIONS
More terms from _Erich Friedman (erich.friedman(AT)stetson.edu)_.