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A118639 Smallest number expressible using the next Roman-numeral symbol. +0
1
1, 4, 9, 40, 90, 400, 900, 4000, 9000, 40000, 90000, 400000, 900000 (list; graph; listen)
OFFSET

1,2

EXAMPLE

a(2) = IV (first usage of V);

a(4) = XL (first usage of L).

CROSSREFS

Cf., A123457.

Sequence in context: A055872 A066924 A101529 this_sequence A073414 A085110 A013459

Adjacent sequences: A118636 A118637 A118638 this_sequence A118640 A118641 A118642

KEYWORD

easy,nonn

AUTHOR

Greg Huber (huber(AT)alum.mit.edu), May 09 2006

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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