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 A226296 #19 May 10 2014 09:52:30 %S A226296 16,24,3456,466560,5927040,6350400,771573600,838252800,990186120000, %T A226296 102979356480000,112378266000000,12379589782560000,133730136540000000, %U A226296 140865976625774400000,1553794408841875200000,16774637597496979200000,17868635701681564800000 %N A226296 The smallest number beginning with n that can be decomposed into divisors consisting exclusively of the first n semiprimes. %C A226296 This is to A225903 as semiprimes A001358 are to prime A000040, and as Product of the first n semiprimes A112141 is to Primorials A002110. %H A226296 Christian N. K. Anderson, <a href="/A226296/b226296.txt">Table of n, a(n) for n = 1..375</a> %H A226296 Christian N. K. Anderson, <a href="/A226296/a226296.txt">Decomposition of the first 376 terms,</a> indicating semiprime factors whose exponents are greater than one. %e A226296 a(1) = 16, the smallest multiple of the first semiprime (4) that begins with leftmost digit 1. %e A226296 a(2) = 24 = 4 * 6, the product of the first 2 semiprimes, and already begins with 2. %Y A226296 Cf. A001358, A112141, A225903. %K A226296 nonn,easy,base %O A226296 1,1 %A A226296 _Jonathan Vos Post_, _Christian N. K. Anderson_, and _Kevin L. Schwartz_, Jun 02 2013