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 A080946 #9 May 02 2014 00:24:47 %S A080946 15,27,30,39,45,51,54,60,75,78,85,87,90,99,102,108,111,119,120,123, %T A080946 125,135,147,150,153,156,159,165,170,171,174,175,180,183,187,195,198, %U A080946 204,205,207,216,219,221,222,238,240,243,245,246,250,267,270,279,285,287 %N A080946 Numbers having exactly three divisors that are also suffixes in binary representation. %C A080946 A080942(a(n))=3. %H A080946 Reinhard Zumkeller, <a href="/A080946/b080946.txt">Table of n, a(n) for n = 1..10000</a> %o A080946 (Haskell) %o A080946 a080946 n = a080946_list !! (n-1) %o A080946 a080946_list = filter ((== 3) . a080942) [1..] %o A080946 -- _Reinhard Zumkeller_, Mar 27 2014 %Y A080946 Cf. A080943, A080945, A080947, A007088, A080940, A080941. %K A080946 nonn,base %O A080946 1,1 %A A080946 _Reinhard Zumkeller_, Feb 25 2003