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 A024808 #13 Aug 28 2024 10:27:08 %S A024808 1,2,5,8,15,22,31,40,55,69,87,104,126,149,172,198,228,256,288,323,357, %T A024808 394,433,473,514,557,603,651,700,751,803,857,914,972,1031,1092,1156, %U A024808 1218,1285,1353,1423,1496,1569,1641,1718,1796,1877,1958,2041,2126,2211,2299 %N A024808 a(n) = position of 5 + n^2 in A004432. %K A024808 nonn %O A024808 3,2 %A A024808 _Clark Kimberling_ %E A024808 Corrected and extended by _David W. Wilson_, May 15 1997 %E A024808 Offset corrected by _Sean A. Irvine_, Jul 24 2019