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 A380716 #13 Apr 18 2025 17:45:14
%S A380716 102,377,430,454
%N A380716 Primitive solutions k to the Diophantine equation k^7 = Sum_{i=1..8} y_i^7 with y_i > 0.
%H A380716 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/DiophantineEquation7thPowers.html">Diophantine Equation - 7th powers</a>.
%H A380716 <a href="/index/Di#Diophantine">Index to sequences related to Diophantine equations</a> (7,1,8)
%e A380716 102^7 = 12^7 + 35^7 + 53^7 + 58^7 + 64^7 + 83^7 + 85^7 + 90^7.
%e A380716 377^7 = 5^7 + 23^7 + 47^7 + 97^7 + 108^7 + 179^7 + 315^7 + 359^7.
%e A380716 430^7 = 10^7 + 105^7 + 105^7 + 113^7 + 160^7 + 256^7 + 373^7 + 400^7.
%e A380716 454^7 = 50^7 + 52^7 + 65^7 + 252^7 + 266^7 + 312^7 + 319^7 + 440^7.
%Y A380716 Cf. A381026.
%K A380716 nonn,hard,more
%O A380716 1,1
%A A380716 _Jinyuan Wang_, Jan 30 2025
%E A380716 a(4) from _Jinyuan Wang_, Feb 12 2025