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 A331525 #14 Jan 20 2020 12:54:05 %S A331525 1,2,4,6,3,10,9,14,15,8,20,14,16,24,20,26,22,27,26,3,5,13,15,36,34,23, %T A331525 40,27,33,44,37,51,54,45,56,18,58,24,53,63,55,57,64,66,36,69,42,63,74, %U A331525 75,73,82,84,66,86,90,93,92,31,94,35,78,99,49,84,100,97 %N A331525 a(n) is the least positive k such that A100272(n) - k^2 is a fifth power. %H A331525 Rémy Sigrist, <a href="/A331525/b331525.txt">Table of n, a(n) for n = 1..10000</a> %H A331525 Rémy Sigrist, <a href="/A331525/a331525_1.gp.txt">PARI program for A331525</a> %e A331525 The first terms, alongside A100272(n), are: %e A331525 n a(n) A100272(n) %e A331525 -- ---- ---------------- %e A331525 1 1 2 = 1^2 + 1^5 %e A331525 2 2 5 = 2^2 + 1^5 %e A331525 3 4 17 = 4^2 + 1^5 %e A331525 4 6 37 = 6^2 + 1^5 %e A331525 5 3 41 = 3^2 + 2^5 %e A331525 6 10 101 = 10^2 + 1^5 %e A331525 7 9 113 = 9^2 + 2^5 %e A331525 8 14 197 = 14^2 + 1^5 %e A331525 9 15 257 = 15^2 + 2^5 %e A331525 10 8 307 = 8^2 + 3^5 %o A331525 (PARI) See Links section. %Y A331525 See A331435 for similar sequences. %Y A331525 Cf. A000584, A100272. %K A331525 nonn %O A331525 1,2 %A A331525 _Rémy Sigrist_, Jan 19 2020