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 A173074 #8 Sep 06 2025 15:48:57 %S A173074 5,6,12,21,40,41,74,76,100,136,157,161,403,728,729,738,743,1476 %N A173074 Numbers k such that A171715(k)=2*A173073(k). %C A173074 Numbers k such that A171715(k)=2*A173073(k). Or, numbers k such that A007645(k)-A003627(k)=2*(A141468(k)-A001477(k)) where A007645 U A003627 U A141468 = A000040 U A141468 = A001477. %C A173074 No further terms between 1476 and 80000. [From _R. J. Mathar_, May 02 2010] %F A173074 A171715(a(n))=2*A173073(a(n)). %e A173074 a(1)=5 because 8=2*4. %Y A173074 Cf. A000040(the primes), A001477(the nonnegative numbers), A003627(the generalized non-cuban primes), A007645(the generalized cuban primes), A141468 (the nonnegative nonprimes), A171715 (the differences between generalized cuban and non-cuban primes), A173073 (the differences between nonnegative nonprimes and nonnegative numbers). %K A173074 nonn,changed %O A173074 1,1 %A A173074 _Juri-Stepan Gerasimov_, Feb 09 2010 %E A173074 Terms from 100 up to 1476 from _R. J. Mathar_, May 02 2010