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 A079601 #14 Sep 10 2019 05:21:37
%S A079601 1,30,236242,12544246390,1229164015128849604270,
%T A079601 1367914941518920202892096130,
%U A079601 10989801394147610473210727542088302770490,67520322268089344459189867921056960354422886750
%N A079601 (A000670(2*p - 1) - 1)/(6*p) where p runs through the primes.
%H A079601 Amiram Eldar, <a href="/A079601/b079601.txt">Table of n, a(n) for n = 1..47</a>
%t A079601 f[0]=1; f[n_] := f[n] = Sum[Binomial[n, k] * f[n - k], {k, 1, n}]; r[p_] := (f[2 p - 1] - 1)/(6 p); r /@ Select[Range[20], PrimeQ] (* _Amiram Eldar_, Sep 10 2019 *)
%Y A079601 Cf. A000670.
%K A079601 nonn
%O A079601 1,2
%A A079601 _Benoit Cloitre_, Jan 28 2003
%E A079601 Definition corrected by _Eric Rowland_, Jun 23 2017