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 A094467 #11 Aug 11 2014 22:45:25 %S A094467 5,1379454719,14182439039,43861478399,51001180159,153003540479, %T A094467 403031236607,518666803199,275502900594021407,69357059049509038079, %U A094467 1161492388333469337599,1245087725796543283199,34384125938411324962897919,115131961034430181728489308159 %N A094467 Primes of the form -1+multiply perfect numbers. %C A094467 The Prime Puzzles link defines left-perfect-primes to be -1+perfect number, and show that 5 is the only one. %H A094467 Charles R Greathouse IV, <a href="/A094467/b094467.txt">Table of n, a(n) for n = 1..51</a> %H A094467 Prime Puzzles, <a href="http://www.primepuzzles.net/puzzles/puzz_203.htm">Puzzle 203</a>. %Y A094467 Cf. A007691, A061644, A094468. %K A094467 nonn %O A094467 1,1 %A A094467 _Labos Elemer_, May 12 2004 %E A094467 a(6)-a(14) from _Charles R Greathouse IV_, Feb 08 2012