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 A096250 #7 Nov 18 2020 10:29:03
%S A096250 1,1,2,9,1,7,6,2,8,2,0,5,0,2,6,8,4,7,4,9,3,8,2,9,8,5,6,6,7,0,3,9,0,5,
%T A096250 3,6,8,1,4,2,5,0,0,5,4,0,3,7,4,3,9,4,6,4,9,1,0,7,2,7,6,3,2,2,4,4,3,5,
%U A096250 8,4,7,3,3,0,7,3,9,2,8,5,4,3,4,0,7,1,0,3,2,7,9,4,3,4,1,2,7,2,8,9,3,1,6,2,9
%N A096250 Decimal expansion of Sum_{n>=1} 1/n^prime(n).
%o A096250 (PARI) xtothepx(n) = { local(x,s,a); default(realprecision,200); s=0; print1(1","); for(x=1,n,s+=1./x^prime(x)); a=Vec(Str(s)); for(x=3,n,print1(eval(a[x]),",")); print(); print(s) }
%o A096250 (PARI) suminf(n=1, 1/n^prime(n)) \\ _Michel Marcus_, Nov 18 2020
%Y A096250 Cf. A062481 (n^prime(n)).
%K A096250 nonn,cons
%O A096250 1,3
%A A096250 _Cino Hilliard_, Jul 31 2004