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 A064309 #5 Jun 27 2023 23:28:34 %S A064309 1,6,38,302,2987,35296,481675,7412010,126421018,2359544825, %T A064309 47713420896,1037071688566,24072357120951,593510886093458, %U A064309 15472489081555834,424833140882979666,12244337906265312999,369340369943742560692,11629466311376482334088 %N A064309 Row sums of triangle A064308. %K A064309 nonn,easy %O A064309 0,2 %A A064309 _Wolfdieter Lang_, Sep 13 2001 %E A064309 More terms from _Sean A. Irvine_, Jun 27 2023