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 A354166 #7 May 31 2022 23:43:56 %S A354166 1,1,1,1,2,2,3,3,3,3,4,4,4,5,6,6,6,6,6,6,6,6,7,7,7,7,7,7,8,8,9,10,10, %T A354166 10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,11,11, %U A354166 11,11,12,13,13,13,14,14,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,16,17 %N A354166 Number of nonprimes among first n terms of A090252. %C A354166 It appears that this sequence controls the growth of A090252. That is, almost all the terms of A090252 lie on the line A090252(n) = k-th prime, where k = n - a(n). %H A354166 N. J. A. Sloane, <a href="/A354166/b354166.txt">Table of n, a(n) for n = 1..34886</a> %Y A354166 Cf. A090252, A354164, A354165. %K A354166 nonn %O A354166 1,5 %A A354166 _N. J. A. Sloane_, May 31 2022