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 A231900 #10 Jan 25 2022 12:23:39
%S A231900 2,7,13,5,29,3,59,3,7,5,3,131,3,263,3,17,3,5,3,19,569,3,17,3,13,7,5,3,
%T A231900 1181,3,17,3,2381,3,11,3,5,3,7,4787,3,5,3,11,3,53,3,11,3,13,19,9689,3,
%U A231900 19379,3,7,5,3,137,3,13,38921,3,17,3,7,77867,3,5,3
%N A231900 Omit the 1s from first differences of A084663.
%C A231900 Terms greater than 1 in A134744.
%H A231900 Reinhard Zumkeller, <a href="/A231900/b231900.txt">Table of n, a(n) for n = 1..120</a>
%H A231900 Eric S. Rowland, <a href="https://arxiv.org/abs/0710.3217">A natural prime-generating recurrence</a>, arXiv:0710.3217 [math.NT], 2007-2008.
%t A231900 DeleteCases[Differences[RecurrenceTable[{a[1]==8,a[n]==a[n-1]+GCD[ a[n-1],n]},a,{n,100000}]],1] (* _Harvey P. Dale_, Apr 12 2016 *)
%o A231900 (Haskell)
%o A231900 a231900 n = a231900_list !! (n-1)
%o A231900 a231900_list = filter (> 1) a134744_list
%Y A231900 Cf. A137613.
%K A231900 nonn
%O A231900 1,1
%A A231900 _Reinhard Zumkeller_, Nov 15 2013