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 A078831 #7 Mar 30 2012 18:50:29 %S A078831 0,1,2,3,4,5,6,8,9,11,12,13,16,17,19,24,25,32,33,35,48,49,64,65,67,96, %T A078831 97,128,129,131,192,193,256,257,259,384,385,512,513,515,768,769,1024, %U A078831 1025,1027,1536,1537,2048,2049,2051,3072,3073,4096,4097,4099,6144,6145 %N A078831 Numbers n with unique occurrence of all binary substrings representing primes in binary representation of n. %C A078831 A078826(a(n)) = A078827(a(n)); A078830 is a subsequence. %H A078831 Ray Chandler, <a href="/A078831/b078831.txt">Table of n, a(n) for n = 1..110</a> %e A078831 n=12 -> '1100' contains two substrings representing distinct primes: '10'=2 and '11'=3, therefore 12 is a term. %Y A078831 Cf. A078826, A078827, A078830, A007088. %K A078831 nonn,base %O A078831 1,3 %A A078831 _Reinhard Zumkeller_, Dec 08 2002 %E A078831 Extended by _Ray Chandler_, Nov 03 2008