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 A089967 #5 Mar 30 2012 18:50:42 %S A089967 1,15,33,35,51,69,85,87,123,141,143,159,161,177,185,213,235,249,259, %T A089967 267,303,321,323,325,335,339,393,411,447,455,485,501,519,533,535,537, %U A089967 553,573,575,591,635,681,685,699,715,717,749,753,771,785,789,805,807 %N A089967 Numbers n such that Omega(n) = gpf(n) mod spf(n), where Omega=A001222, gpf=A006530 and spf=A020639. %C A089967 A069859(a(n)) = A001222(a(n)); %C A089967 A064900 is a subsequence. %Y A089967 Cf. A089966. %K A089967 nonn %O A089967 1,2 %A A089967 _Reinhard Zumkeller_, Nov 17 2003