This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A119310 #6 Mar 31 2012 13:21:31 %S A119310 9,18,27,31,22,31,40,49,33,24,33,42,51,55,46,55,64,73,57,48,57,66,75, %T A119310 79,70,79,88,97,81,72,81,90,99,103,94,103,112,121,105,36,45,54,63,67, %U A119310 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 %N A119310 Alphabetical value of n in its Roman numerals-based representation. %C A119310 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 %H A119310 Jeremy Gardiner, <a href="/A119310/b119310.txt">Table of n, a(n) for n = 1..3999</a> %e A119310 a(12) corresponds to XII whose alphabetical value is 24 + 9 + 9 = 42. %Y A119310 Cf. A002963 %K A119310 base,easy,fini,nonn %O A119310 1,1 %A A119310 _Tanya Khovanova_, Jul 23 2006 %E A119310 More terms from _Franklin T. Adams-Watters_, Jul 26 2006