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 A085925 #7 Dec 17 2024 09:47:12 %S A085925 1,3,4,6,7,8,9,10,12,14,17,18,19,20,23,29,30,32,33,34,37,41,42,43,47, %T A085925 53,59,61,62,63,67,68,69,70,71,73,74,79,83,89,90,91,92,97,101,103,104, %U A085925 107,109,113,127,131,132,137,139,149,151,157,158,163,164,165,166,167,173 %N A085925 a(n) is taken to be the smallest positive integer greater than a(n-1) which is consistent with the condition "n is a member of the sequence if and only if a(n) is not prime". %e A085925 a(4) = 6 because 4 is in the sequence and 6 is the next nonprime after a(3). a(5) = 7 because 5 is not in the sequence and 7 is the next prime after a(4). %Y A085925 Cf. A079000, A079254. %Y A085925 A companion to A121053. %K A085925 easy,nonn %O A085925 1,2 %A A085925 _David Wasserman_, Aug 16 2003