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 A162645 #14 Jul 07 2020 08:12:10 %S A162645 4,9,12,16,18,20,25,28,44,45,48,49,50,52,60,63,64,68,72,75,76,80,81, %T A162645 84,90,92,98,99,108,112,116,117,121,124,126,132,140,147,148,150,153, %U A162645 156,162,164,169,171,172,175,176,188,192,198,200,204,207,208,212,220,228 %N A162645 Numbers m such that A162511(m) = -1. %C A162645 Numbers n where A001222(n)-A001221(n) is odd. - _Enrique Pérez Herrero_, Jul 07 2012 %C A162645 This sequence has an asymptotic density (1 - A065472/zeta(2))/2 = 0.264159... (Mossinghoff and Trudgian, 2019). - _Amiram Eldar_, Jul 07 2020 %H A162645 Enrique Pérez Herrero, <a href="/A162645/b162645.txt">Table of n, a(n) for n = 1..5000</a> %H A162645 Michael J. Mossinghoff and Timothy S. Trudgian, <a href="https://arxiv.org/abs/1906.02847">A tale of two omegas</a>, arXiv:1906.02847 [math.NT], 2019. %t A162645 Select[Range[10^2],OddQ[PrimeOmega[#]-PrimeNu[#]]&] (* _Enrique Pérez Herrero_, Jul 07 2012 *) %Y A162645 Complement of A162644. %Y A162645 Subsequence of A072587. %Y A162645 Cf. A001221, A001222, A065472, A162643, A162511. %K A162645 nonn %O A162645 1,1 %A A162645 _Reinhard Zumkeller_, Jul 08 2009