OFFSET
1,2
LINKS
Sean A. Irvine, Table of n, a(n) for n = 1..316
P. Lewis, Roman numerals and calendar
EXAMPLE
9 is OK because when written in Roman numerals it is IX and has no letter repeated.
The largest possible term is a(316) = 1666 = MDCLXVI. - Sean A. Irvine, Apr 07 2023
CROSSREFS
KEYWORD
nonn,base,fini,full
AUTHOR
Rodolfo Kurchan, Jul 11 2001
EXTENSIONS
Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jul 23 2001
STATUS
approved