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 A107964 #9 Jul 30 2015 23:01:00
%S A107964 0,1,29,971,45979,2798423,247080797,25626335843,3359804735327,
%T A107964 525737696543051,86239141244378363,16043263182247602671,
%U A107964 3203015846871245149541,765364544195714620296857
%N A107964 a(n) = A107712(n) - A002110(n).
%C A107964 n-th term is coprime to first (2n) primes.
%t A107964 f[n_] := Product[Prime[k + n], {k, n}] - Product[Prime[k], {k, n}]; Table[ f[n], {n, 0, 14}] (* _Robert G. Wilson v_, Jun 14 2005 *)
%Y A107964 Cf. A107712, A002110.
%K A107964 nonn
%O A107964 0,3
%A A107964 _Leroy Quet_, Jun 12 2005
%E A107964 More terms from _Robert G. Wilson v_, Jun 14 2005