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 A356726 Integers which have in Roman numerals more distinct symbols than any smaller number. 0
 1, 4, 14, 44, 144, 444, 1444 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Indices of record highs in A057226. Smallest number whose Roman notation has exactly n distinct symbols. The sequence is finite because 1444 is the smallest number using the symbols I,V,X,L,C,D,M. LINKS Table of n, a(n) for n=1..7. EXAMPLE For n = 3, a(3) = 14 because 14 = XIV which is the smallest number with 3 symbols in Roman notation. MATHEMATICA kmax=1500; a={}; n=1; For[k=1, k<=kmax, k++, If[Length[DeleteDuplicates[Characters[RomanNumeral[k]]]] == n, AppendTo[a, k]; n++; k=1]]; a (* Stefano Spezia, Aug 26 2022 *) CROSSREFS Cf. A057226, A038378. Sequence in context: A097137 A083377 A047115 * A208666 A125068 A184138 Adjacent sequences: A356723 A356724 A356725 * A356727 A356728 A356729 KEYWORD nonn,fini,full,easy AUTHOR Alain Cousquer, Aug 24 2022 STATUS approved

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Last modified June 2 11:44 EDT 2023. Contains 363097 sequences. (Running on oeis4.)