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 A176819 #4 Aug 05 2024 12:12:48
%S A176819 64,96,29,216,43,192,413,67,69,219,77,595,485,424,224,115,480,381,536,
%T A176819 715,453,795,501,171,173,712,368,187,189,2211,1085,904,699,237,723,
%U A176819 245,1512,1048,267,1925,283,285,576,291,2709,939,317,640,1635,3773,355,1805
%N A176819 Distances between terms in A085986.
%t A176819 q[n_]:=Last/@FactorInteger[n]=={2,2};lst=Select[Range[3*8! ],q[ # ]&];a=Table[lst[[n+1]]-lst[[n]],{n,1,Length[lst]-1}]
%t A176819 Differences[Select[Range[200],PrimeOmega[#]==2&&SquareFreeQ[#]&]^2] (* _Harvey P. Dale_, Aug 05 2024 *)
%Y A176819 Cf. A006881, A085986
%K A176819 nonn
%O A176819 1,1
%A A176819 _Vladimir Joseph Stephan Orlovsky_, Apr 26 2010