cp's OEIS Frontend

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.

A234522 Decimal expansion of 7^(1/4) - 5^(1/4).

This page as a plain text file.
%I A234522 #23 Mar 23 2025 15:25:18
%S A234522 1,3,1,2,2,7,7,8,0,4,7,6,5,6,5,2,0,1,2,9,9,3,3,3,3,5,1,3,5,2,8,4,6,7,
%T A234522 7,7,6,5,4,8,1,1,0,3,4,6,5,4,7,9,1,2,7,2,6,7,0,8,6,2,0,8,3,4,4,0,7,5,
%U A234522 5,2,7,4,1,9,9,6,8,3,0,0,5,8,4,8,7,1,8,1,4,2,1,1,5,5,6,5,0,1,7
%N A234522 Decimal expansion of 7^(1/4) - 5^(1/4).
%C A234522 Decimal expansion of maximal value of function beta(n) = sigma(n)^(1/n) - (n+1)^(1/n) for n = 4, where beta(n) is called the beta-deviation from primality of number n (see A234520). Lim_n->infinity beta(n) = 0.
%C A234522 An algebraic integer with degree 16 and minimal polynomial x^16 - 48x^12 - 3896x^8 - 53952x^4 + 16. - _Charles R Greathouse IV_, Apr 25 2016
%H A234522 <a href="/index/Al#algebraic_16">Index entries for algebraic numbers, degree 16</a>
%F A234522 Equals A011005-A011003.
%e A234522 0.13122778047656520129933335...
%t A234522 RealDigits[N[7^(1/4)-5^(1/4), 100]][[1]] (* _Georg Fischer_, Apr 04 2020 *)
%t A234522 RealDigits[Surd[7,4]-Surd[5,4],10,120][[1]] (* _Harvey P. Dale_, Mar 23 2025 *)
%o A234522 (PARI) 7^(1/4) - 5^(1/4) \\ _Charles R Greathouse IV_, Apr 25 2016
%Y A234522 Cf. A234515, A234516, A234517, A234518, A234519, A234520, A234521, A234523, A234524.
%K A234522 nonn,cons
%O A234522 0,2
%A A234522 _Jaroslav Krizek_, Jan 14 2014
%E A234522 a(97) corrected by _Georg Fischer_, Apr 04 2020