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 A178968 Numbers that are represented in Roman numerals by exactly four letters. 2

%I

%S 8,13,17,22,24,26,29,31,35,42,44,46,49,53,57,62,64,66,69,71,75,80,92,

%T 94,96,99,103,107,112,114,116,119,121,125,130,141,145,152,154,156,159,

%U 161,165,170,191,195,202,204,206,209,211,215,220,240,251,255,260

%N Numbers that are represented in Roman numerals by exactly four letters.

%H Nathaniel Johnston, <a href="/A178968/b178968.txt">Table of n, a(n) for n = 1..215</a> (complete up to 3999)

%p for n from 1 to 3999 do if(length(convert(n, roman)) = 4)then printf("%d, ", n): fi: od: # _Nathaniel Johnston_, May 18 2011

%t Select[Range[300],StringLength[RomanNumeral[#]]==4&] (* _Harvey P. Dale_, Aug 20 2021 *)

%Y Cf. A142958.

%K base,easy,nonn

%O 1,1

%A _Kyle Stern_, Jan 01 2011

%E Extended by _Nathaniel Johnston_, May 18 2011

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Last modified May 22 20:52 EDT 2022. Contains 353959 sequences. (Running on oeis4.)