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 A030320 #13 Apr 13 2021 22:57:31 %S A030320 1,4,1,10,4,3,1,26,10,36,4,9,3,2,1,66,26,78,10,90,36,38,4,25,9,35,3,8, %T A030320 2,1,6,162,66,176,26,190,78,10,31,218,90,232,36,81,38,98,4,65,25,77,9, %U A030320 89,35,101,3,24,8,34,2,7,1,6,21,386,162,402,66,418,176 %N A030320 Least k such that the base-2 representation of n begins at s(k), where s=A030317. %Y A030320 Cf. A030317. %K A030320 nonn %O A030320 1,2 %A A030320 _Clark Kimberling_ %E A030320 a(64) onward corrected by _Sean A. Irvine_, Mar 30 2020