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 A356769 #20 Aug 30 2022 17:14:51
%S A356769 2,3,1,4,6,7,5,11,9,8,10,14,13,12,19,15,17,20,16,18,24,22,21,25,28,27,
%T A356769 30,32,38,23,31,26,36,35,34,29,47,33,40,41,54,50,43,55,39,48,37,42,45,
%U A356769 44,53,70,46,56,74,52,62,51,66,49,58,68,59,63,67,60,57,61,72,64,65,76,69,73,75,82,85
%N A356769 Semiprime gaps (A065516) in the order of first occurrences.
%t A356769 s={2};n=6;Do[m=n+1;While[PrimeOmega[m]!= 2,m++];If[FreeQ[s,m-n],AppendTo[s,m-n];Print[{n,m-n}]];n=m,{10^8}];s
%Y A356769 Cf. A065516, A001358.
%K A356769 nonn
%O A356769 1,1
%A A356769 _Zak Seidov_, Aug 27 2022