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 A370697 #42 Jun 22 2024 09:08:33
%S A370697 2,5,4,6,2,9,6,2,9,6,6,9,8,1,7,3,8,6,8,3,1,2,7,5,7,3,2,2,7,0,2,0,6,9,
%T A370697 7,0,4,2,4,0,9,9,9,7,8,9,1,3,1,4,2,1,7,8,4,3,7,9,8,4,7,6,6,1,9,0,3,8,
%U A370697 2,0,1,4,7,3,2,7,7,3,1,5,1,7,5,6,8,4,8,6,6,4,0,4,9,8,2,3,7,2
%N A370697 Decimal expansion of Sum_{p prime} 1/p!^p.
%e A370697 0.25462962966981738683127573227020697042409997891314217843798476619...
%t A370697 RealDigits[Sum[1/Prime[n]!^Prime[n], {n, 1, 12}], 10, 1000] // First
%o A370697 (PARI) suminf(k=1,1/prime(k)!^prime(k)) \\ _Hugo Pfoertner_, Jun 22 2024
%Y A370697 Cf. A068210, A100124, A094289, A073009.
%K A370697 cons,nonn
%O A370697 0,1
%A A370697 _Roberto Trocchi_, Jun 07 2024