login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

Decimal expansion of 1+2^(1/2)+3^(1/3)+4^(1/4)+5^(1/5)+6^(1/6)+7^(1/7).
0

%I #24 Sep 08 2022 08:46:10

%S 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 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 0,6,2,6,5,6,0,5,2,9,4,0,5,1,1,7,2,7,1

%N Decimal expansion of 1+2^(1/2)+3^(1/3)+4^(1/4)+5^(1/5)+6^(1/6)+7^(1/7).

%F Equals 9.3188817588682147714986428688188651966599608644706733821414765...

%t RealDigits[1 + 2 2^(1/2) + 3^(1/3) + 5^(1/5) + 6^(1/6) + 7^(1/7), 10, 120][[1]]

%o (Magma) 1+2*2^(1/2)+3^(1/3)+5^(1/5)+6^(1/6)+7^(1/7);

%o (PARI) sum(n=1,7,sqrtn(n,n)) \\ _Charles R Greathouse IV_, Apr 20 2016

%Y Cf. A037077.

%K nonn,cons

%O 1,1

%A _Vincenzo Librandi_, Nov 12 2014