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 A240803 #16 Sep 08 2022 08:46:07
%S A240803 5,17,107,1157,15017,255257,4849847,111546437,3234846617,100280245067,
%T A240803 3710369067407,152125131763607,6541380665835017,307444891294245707,
%U A240803 16294579238595022367,961380175077106319537,58644190679703485491637,3929160775540133527939547,278970415063349480483707697
%N A240803 a(n) = 2 + product of first n odd primes.
%H A240803 Vincenzo Librandi, <a href="/A240803/b240803.txt">Table of n, a(n) for n = 1..200</a>
%H A240803 Des MacHale, <a href="http://dx.doi.org/10.2307/3621650">Infinitely many proofs that there are infinitely many primes</a>, Math. Gazette, 97 (No. 540, 2013), 495-498.
%t A240803 Table[Product[Prime[k + 1], {k, 1, n}] + 2, {n, 1, 30}] (* _Vincenzo Librandi_, Apr 15 2014 *)
%o A240803 (Magma) [2+&*[NthPrime(i+1): i in [1..n]]: n in [1..20]]; // _Vincenzo Librandi_, Apr 15 2014
%Y A240803 Cf. A000945, A000946, A005265, A005266, A240804.
%K A240803 nonn
%O A240803 1,1
%A A240803 _N. J. A. Sloane_, Apr 14 2014