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 A128665 #7 Mar 30 2012 17:34:57 %S A128665 5,10,27,16,112,96,288,896,512,1536,2048,10240,12288,36864,49152, %T A128665 98304,196608,393216,1769472,1572864,3145728,6291456,8388608,41943040, %U A128665 50331648,234881024,201326592,905969664,805306368,6039797760,3221225472,6442450944,19327352832,64424509440,173946175488,257698037760,137438953472,412316860416,1236950581248,3848290697216,2199023255552,10995116277760,29686813949952 %N A128665 Least n-almost prime of the form semiprime + 1. %Y A128665 Cf. A005385, A109373, A109067, A109287, A109383. %K A128665 nonn %O A128665 1,1 %A A128665 _Ray Chandler_, Mar 19 2007 %E A128665 a(28)-a(43) from _Donovan Johnson_, Nov 24 2010