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A178968 Numbers that are represented in Roman numerals by exactly four letters. 2
8, 13, 17, 22, 24, 26, 29, 31, 35, 42, 44, 46, 49, 53, 57, 62, 64, 66, 69, 71, 75, 80, 92, 94, 96, 99, 103, 107, 112, 114, 116, 119, 121, 125, 130, 141, 145, 152, 154, 156, 159, 161, 165, 170, 191, 195, 202, 204, 206, 209, 211, 215, 220, 240, 251, 255, 260 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Nathaniel Johnston, Table of n, a(n) for n = 1..215 (complete up to 3999)
MAPLE
for n from 1 to 3999 do if(length(convert(n, roman)) = 4)then printf("%d, ", n): fi: od: # Nathaniel Johnston, May 18 2011
MATHEMATICA
Select[Range[300], StringLength[RomanNumeral[#]]==4&] (* Harvey P. Dale, Aug 20 2021 *)
CROSSREFS
Cf. A142958.
Sequence in context: A168339 A070112 A070113 * A006613 A204221 A348277
KEYWORD
base,easy,nonn
AUTHOR
Kyle Stern, Jan 01 2011
EXTENSIONS
Extended by Nathaniel Johnston, May 18 2011
STATUS
approved

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)