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 A335869 #17 Jul 07 2020 04:34:23 %S A335869 3,8,13,20,25,28,29,35,43,44,47,49,53,55,59,67,68,76,79,83,85,92,95, %T A335869 97,101,107,109,115,119,121,124,127,133,137,148,149,151,155,161,164, %U A335869 179,181,185,187,199,205,209,217,223,229,241,244,253,259,269,271,277 %N A335869 Primitive terms of A275608. %e A335869 8 is in the sequence because 8 is in A275608, but none of 1, 2, and 4 are in A275608. %Y A335869 Cf. A003422, A049042, A049043, A275608. %K A335869 nonn %O A335869 1,1 %A A335869 _J. Lowell_, Jun 27 2020