A119310 Alphabetical value of n in its Roman numerals-based representation.

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

Offset: 1

Author

Tanya Khovanova, Jul 23 2006

Keywords

• base
• easy
• fini
• nonn

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

Examples

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

Links

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

Crossrefs

Cf. A002963

Extensions

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