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 A247511 #15 Dec 23 2024 14:53:44 %S A247511 12,12,3,4,2,3,4,1,4,1,1,2,3,4,1,4,2,1,2,2,4,5,0,0,1,0,0,5,3,2,2,5,1, %T A247511 2,2,2,2,2,1,4,0,1,0,4,6,2,0,2,2,1,4,2,3,3,1,2,1,1,2,5,1,1,0,4,2,4,1, %U A247511 1,1,3,2,2,1,2,2,1,2,3,1,3,0,2,1,3,3,1 %N A247511 Number of preprimes of the third kind (A247394) with the smallest prime divisor equals prime(n). %H A247511 Vladimir Shevelev, <a href="https://web.archive.org/web/*/http://list.seqfan.eu/oldermail/seqfan/2014-September/013643.html">A classification of the positive integers over primes</a> %Y A247511 Cf. A000040, A156759, A247393, A247394, A247509, A247510, A247606. %K A247511 nonn %O A247511 1,1 %A A247511 _Vladimir Shevelev_, Sep 18 2014 %E A247511 More terms from _Peter J. C. Moses_, Sep 18 2014