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 A374950 #13 Aug 02 2024 19:15:01
%S A374950 2,3,4,5,9,6,7,11,8,12,10,13,17,14,15,19,16,20,18,21,27,22,23,25,26,
%T A374950 24,28,29,33,30,31,35,32,36,34,37,41,38,39,43,40,44,42,45,49,46,47,53,
%U A374950 48,50,51,55,52,56,54,57,61,58,59,67,60,62,64,63,65,68,66
%N A374950 Sequence starting with 2, where the next term is the lowest new integer which is greater than 1 and coprime with the sum of all previous terms.
%t A374950 a={2}; s=2;For[n=2, n<=67, n++,k=2; While[GCD[k,s]!=1||MemberQ[a,k], k++]; s+=k; AppendTo[a,k]]; a (* _Stefano Spezia_, Jul 25 2024 *)
%Y A374950 Cf. A084385 (starting with 1).
%K A374950 nonn
%O A374950 1,1
%A A374950 _Declan Boushy_, Jul 24 2024
%E A374950 More terms from _Pontus von Brömssen_, Jul 25 2024