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 A217702 #16 Aug 22 2024 11:41:56
%S A217702 1,5,2,6,0,6,8,1,3,4,4,7,3,3,3,0,8,2,4,7,7,8,0,4,7,2,2,5,1,6,2,4,3,8,
%T A217702 4,0,5,4,4,9,7,5,4,2,4,0,4,6,6,4,6,5,6,5,0,7,5,8,3,6,5,6,5,1,6,7,9,5,
%U A217702 7,4,7,1,1,4,7,2,0,2,5,2,3,8,8,0,1,8,1,6,0,9,7,3,1,1,7,7,3,6,3,0
%N A217702 Decimal expansion of Sum_{n>=0} 1/(1+n!).
%C A217702 Is there any known closed form for this sum?
%e A217702 1.526068134473330824778047225162438405449754240466465650758365651679...
%t A217702 digits = 100; NSum[1/(1 + n!), {n, 0, Infinity}, NSumTerms -> digits, WorkingPrecision -> digits+5] // RealDigits[#, 10, digits]& // First
%Y A217702 Cf. A038507.
%K A217702 nonn,cons
%O A217702 1,2
%A A217702 _Jean-François Alcover_, Mar 20 2013