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A093704 Value of initial digit of n in Roman numeral representation. +0
1
1, 1, 1, 1, 5, 5, 5, 5, 1, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50 (list; graph; listen)
OFFSET

1,5

LINKS

Stephanus Gibbs, Roman Numeral and Date Conversion

Eric Weisstein's World of Mathematics, Roman Numerals

EXAMPLE

n=42 == XLII -> X == a(42)=10.

CROSSREFS

Cf. A000030.

Sequence in context: A133707 A083945 A125563 this_sequence A112110 A098598 A010716

Adjacent sequences: A093701 A093702 A093703 this_sequence A093705 A093706 A093707

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), May 17 2004

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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