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 A173910 #8 Jan 19 2023 03:27:12
%S A173910 2,2,3,3,3,4,5,7,10,14,15,18,30,32,46,56,58,59,84,86,99,101,103,106,
%T A173910 122,126,128,128,136,152,157,170,190,208,281,282,284,320,393,406,459,
%U A173910 479,526,529,530,540,559,601,639,640,709,789,828,900,917,949,1029,1029
%N A173910 a(n) = smallest number >= a(n-1) such that a(1)*a(2)*...*a(n)+1 is prime; a(1)=2.
%H A173910 Amiram Eldar, <a href="/A173910/b173910.txt">Table of n, a(n) for n = 1..700</a>
%t A173910 a[1] = 2; a[n_] := a[n] = Module[{k = a[n - 1], r = Product[a[i], {i, 1, n - 1}]}, While[! PrimeQ[k*r + 1], k++]; k]; Array[a, 60] (* _Amiram Eldar_, Jan 19 2023 *)
%Y A173910 Cf. A036012, A046966.
%K A173910 nonn
%O A173910 1,1
%A A173910 _Dmitry Kamenetsky_, Mar 02 2010
%E A173910 More terms from _Amiram Eldar_, Jan 19 2023