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 A077730 #7 Oct 19 2021 21:13:23 %S A077730 1,15,1825,6667,235702,2581988,8819171,94280904,316227766, %T A077730 10050378152592120755,1054092553389459777333,348155311911395676354583, %U A077730 36237153766973933397363154,3760507165451774726100982411 %N A077730 a(n) = A077729(n)^(1/2). %Y A077730 Cf. A077729. %K A077730 base,nonn %O A077730 1,2 %A A077730 _Amarnath Murthy_, Nov 19 2002 %E A077730 Corrected and extended by _Sascha Kurz_, Jan 04 2003