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 A105416 #11 Jul 10 2018 07:52:07 %S A105416 1444,1446,1464,1466,1644,1646,1664,1666 %N A105416 Numbers that are pandigital in Roman numerals using each of the symbols I, V, X, L, C, D and M exactly once. %C A105416 Subset of A105417. %e A105416 a(1) = 1444 because written in Roman numeral it is MCDXLIV, using each of the symbols I, V, X, L, C, D and M exactly once. %o A105416 (PARI) A105416=vector(8,n,n--+722+n\2*8+n\4*80)*2 \\ _M. F. Hasler_, Jul 10 2018 %Y A105416 Cf. A061493, A105417. %K A105416 base,fini,full,nonn %O A105416 1,1 %A A105416 Robert Happelberg (roberthappelberg(AT)yahoo.com), Apr 06 2005