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 A075385 #4 Dec 05 2013 19:55:38 %S A075385 1,4,9,20,30,54,56,104,126,160,154,264,234,364,390,480,374,630,475, %T A075385 780,819,946,713,1200,1100,1326,1350,1596,1160,1950,1333,2144,2046, %U A075385 2312,2380,2844,1961,3002,3081,3600,2378,3948,2666,4136,4275,4370,3149,5280 %N A075385 Final term of n-th group in A075383. %Y A075385 Cf. A075383, A075384, A075386, A075387, A075389. %K A075385 nonn %O A075385 1,2 %A A075385 _Amarnath Murthy_, Sep 22 2002 %E A075385 More terms from _David Wasserman_, Jan 17 2005