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 A250091 #24 Sep 08 2022 08:46:10 %S A250091 9,3,1,8,8,8,1,7,5,8,8,6,8,2,1,4,7,7,1,4,9,8,6,4,2,8,6,8,8,1,8,8,6,5, %T A250091 1,9,6,6,5,9,9,6,0,8,6,4,4,7,0,6,7,3,3,8,2,1,4,1,4,7,6,5,1,7,0,3,6,6, %U A250091 0,6,2,6,5,6,0,5,2,9,4,0,5,1,1,7,2,7,1 %N A250091 Decimal expansion of 1+2^(1/2)+3^(1/3)+4^(1/4)+5^(1/5)+6^(1/6)+7^(1/7). %F A250091 Equals 9.3188817588682147714986428688188651966599608644706733821414765... %t A250091 RealDigits[1 + 2 2^(1/2) + 3^(1/3) + 5^(1/5) + 6^(1/6) + 7^(1/7), 10, 120][[1]] %o A250091 (Magma) 1+2*2^(1/2)+3^(1/3)+5^(1/5)+6^(1/6)+7^(1/7); %o A250091 (PARI) sum(n=1,7,sqrtn(n,n)) \\ _Charles R Greathouse IV_, Apr 20 2016 %Y A250091 Cf. A037077. %K A250091 nonn,cons %O A250091 1,1 %A A250091 _Vincenzo Librandi_, Nov 12 2014