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 A180080 #2 Mar 30 2012 18:51:06 %S A180080 0,1,4,7,10,16,25,28,37,55,61,64,97,109,151,208,241,481,526,583,874, %T A180080 919,1141,1225,1777,1792,3190,3529,3643,4774,6433,7237,7327,7645,8221, %U A180080 12331,12643,13351,14191,14419,14743,15775,16246,19660,29491,31546,31549 %N A180080 Record values in A180076. %C A180080 a(n)=A180076(A180081(n)) and A180076(m)<a(n) for m<A180081(n); %C A180080 for n>1: a(n) mod 3 = 1, subsequence of A016777. %K A180080 nonn %O A180080 1,3 %A A180080 _Reinhard Zumkeller_, Aug 14 2010