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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

CROSSREFS

Cf. A142958.

Sequence in context: A168339 A070112 A070113 * A006613 A204221 A014134

Adjacent sequences:  A178965 A178966 A178967 * A178969 A178970 A178971

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 May 21 02:55 EDT 2019. Contains 323434 sequences. (Running on oeis4.)