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 A178606 #4 May 19 2023 15:24:25
%S A178606 2,3,5,11,17,53,107,389,947,3847,10399,46091,135151,645131,2027033,
%T A178606 10321937,34459429,185794579,654729139,3715891217,13749310577,
%U A178606 81749606417,316234143227,1961990553613,7905853580633,51011754393671
%N A178606 Smallest prime > n!! (double factorial of n).
%t A178606 PrimeNext[n_]:=Module[{k},k=n+1;While[ !PrimeQ[k],k++ ];k]; Table[PrimeNext[n!! ],{n,40}]
%Y A178606 Cf. A006990, A037151.
%K A178606 nonn
%O A178606 1,1
%A A178606 _Vladimir Joseph Stephan Orlovsky_, May 30 2010