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 A011375 #8 Apr 02 2022 09:32:59 %S A011375 3,3,4,4,5,5,5,6,7,8,8,8,8,9,9,9,9,10,10,11,11,12,12,12,13,13,14,14, %T A011375 15,15,16,16,16,17,17,18,18,19,19,19,20,20,20,21,21,22,22,23,23,24,24, %U A011375 25,25,26,26,27,27,28,28,29 %N A011375 Length of n-th term in A006960. %H A011375 Fred Gruenberger, <a href="https://www.jstor.org/stable/24969338">How to handle numbers with thousands of digits, and why one might want to</a>, Computer Recreations, Scientific American, 250 (No. 4, 1984), 19-26. %K A011375 nonn,base %O A011375 0,1 %A A011375 _Simon Plouffe_