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 A051059 #7 Aug 27 2021 02:51:21 %S A051059 1,1,2,2,2,3,4,4,5,6,6,8,10,10,12,14,15,18,20,22,26,30,33,37,42,47,54, %T A051059 62,68,81,93,104,122,142,163,192,225,264,311,371,437,523,623,739,885, %U A051059 1063,1266,1518,1817,2175,2600,3112,3711,4437,5288,6296,7493,8918 %N A051059 a(n) = A048141(3*n+1). %K A051059 nonn %O A051059 0,3 %A A051059 _Wouter Meeussen_ %E A051059 More terms and simplified name from _Sean A. Irvine_, Aug 24 2021