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 A145441 #1 Jan 09 2009 03:00:00 %S A145441 1,2,3,6,9,12,15,18,21,24 %N A145441 Exponents of multipliers 10^a(n) of SI prefixes, in increasing order. %C A145441 Corresponding prefixes and symbols for n=1..10 are: deca(da), hecto(h), kilo(k), mega(M), giga(G), tera(T), peta(P), exa(E), zetta(Z) and yotta(Y). %C A145441 There are reciprocial prefixes which multiplier is 1/10^a(n): deci(d), centi(c), milli(m), micro(Greek mu), nano(n), pico(p), femto(f), atto(a), zepto(z) and yocto(y). %H A145441 Bureau International des Poids et Mesures, <a href="http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf">The International System of Units</a>, 8th ed., 2006, page 121. %H A145441 Wikipedia, <a href="http://en.wikipedia.org/wiki/SI_prefix">SI prefix</a>. %Y A145441 A145442(n) = 10^a(n). %K A145441 fini,full,nonn %O A145441 1,2 %A A145441 Kang Seonghoon (lifthrasiir(AT)gmail.com), Oct 10 2008, Oct 17 2008