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A119310 Alphabetical value of n in its Roman numerals-based representation. 3
9, 18, 27, 31, 22, 31, 40, 49, 33, 24, 33, 42, 51, 55, 46, 55, 64, 73, 57, 48, 57, 66, 75, 79, 70, 79, 88, 97, 81, 72, 81, 90, 99, 103, 94, 103, 112, 121, 105, 36, 45, 54, 63, 67, 58, 67, 76, 85, 69, 12, 21, 30, 39, 43, 34, 43, 52, 61, 45, 36, 45, 54, 63, 67, 58, 67, 76, 85, 69 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This uses "modern" (i.e. medieval) Roman numerals; the ancient Romans did not use prefixed letters to subtract. One sometimes sees e.g. "IL" for 49, but this is not standard; the standard representation encodes each digit separately. Sequence is finite since Roman numerals are only defined up to 3999. (There is an extension using underlined letters up to 3999999, but that's still finite.) - Franklin T. Adams-Watters, Jul 26 2006

LINKS

Jeremy Gardiner, Table of n, a(n) for n = 1..3999

EXAMPLE

a(12) corresponds to XII whose alphabetical value is 24 + 9 + 9 = 42.

CROSSREFS

Cf. A002963

Sequence in context: A110529 A127887 A037337 * A037993 A044849 A282149

Adjacent sequences:  A119307 A119308 A119309 * A119311 A119312 A119313

KEYWORD

base,easy,fini,nonn

AUTHOR

Tanya Khovanova, Jul 23 2006

EXTENSIONS

More terms from Franklin T. Adams-Watters, Jul 26 2006

STATUS

approved

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Last modified December 16 00:55 EST 2018. Contains 318157 sequences. (Running on oeis4.)