|
| |
|
|
A036787
|
|
Length of Roman notation for n = length of decimal representation.
|
|
4
| |
|
|
1, 5, 11, 15, 20, 40, 51, 55, 60, 90, 102, 104, 106, 109, 111, 115, 120, 140, 151, 155, 160, 190, 201, 205, 210, 250, 300, 401, 405, 410, 450, 502, 504, 506, 509, 511, 515, 520, 540, 551, 555, 560, 590, 601, 605, 610, 650, 700, 901, 905, 910, 950, 1003, 1007
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
LINKS
| Nathaniel Johnston, Table of n, a(n) for n = 1..144 (complete up to 3999)
|
|
|
EXAMPLE
| 15 = XV has length 2 in both notations.
|
|
|
MAPLE
| for n from 1 to 3999 do if(length(convert(n, roman)) = length(n))then printf("%d, ", n): fi: od: # Nathaniel Johnston, May 18 2011
|
|
|
MATHEMATICA
| Select[Range[1100], StringLength[IntegerString[#, "Roman"]] == IntegerLength[ #]&] (* From Harvey P. Dale, Jul 25 2011 *)
|
|
|
CROSSREFS
| Cf. A036786, A036788.
Sequence in context: A183227 A088648 A075628 * A187715 A154503 A137009
Adjacent sequences: A036784 A036785 A036786 * A036788 A036789 A036790
|
|
|
KEYWORD
| nonn,base,easy,nice
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
EXTENSIONS
| Corrected and extended by Larry Reeves (larryr(AT)acm.org), Sep 25 2000
|
| |
|
|
