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 A078329 #17 Aug 26 2020 03:46:19 %S A078329 2,29,41,101,109,113,137,173,181,229,257,281,317,353,373,401,409,433, %T A078329 601,617,641,653,677,709,761,821,829,853,937,941,977,1009,1021,1033, %U A078329 1069,1117,1129,1181,1193,1297,1361,1373,1433,1489,1597,1613,1669,1697 %N A078329 Primes p such that mu(p+1)=-1, where mu denotes the moebius function. %C A078329 Contains primes followed by primes (i.e., the 2), primes followed by sphenic numbers (A007304), or followed by elements of A046387, A123321, A115343 etc. - _R. J. Mathar_, Aug 14 2019 %C A078329 Primes followed by numbers that are the product of an odd number of distinct primes (A030059). - _Joerg Arndt_, Aug 14 2019 %H A078329 Amiram Eldar, <a href="/A078329/b078329.txt">Table of n, a(n) for n = 1..10000</a> %e A078329 29 is in the sequence because 29 is prime and mu(30)=-1. %t A078329 Select[Prime[Range[300]],MoebiusMu[#+1]==-1&] (* _Harvey P. Dale_, Feb 28 2013 *) %Y A078329 Cf. A008683, A030059. %Y A078329 Cf. A007304, A046387, A123321, A115343. %K A078329 easy,nonn %O A078329 1,1 %A A078329 _Shyam Sunder Gupta_, Nov 21 2002