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.

A057370 Numbers k that can be expressed as k = w+x = y*z with w*x = (y+z)^3 where w, x, y, and z are all positive integers.

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%I A057370 #14 May 02 2021 01:23:53
%S A057370 1024,1296,1458,2240,2500,2592,3072,3744,3750,5642,5796,6480,6561,
%T A057370 8526,9900,10400,11250,11340,12005,14580,15552,22500,25296,29792,
%U A057370 40850,46080,47025,52500,57024,76832,78750,99008,101376,107604,111537,122636,138125,140625,153900
%N A057370 Numbers k that can be expressed as k = w+x = y*z with w*x = (y+z)^3 where w, x, y, and z are all positive integers.
%e A057370 a(1) = 1024 = 512+512 = 32*32; 512*512 = (32+32)^3.
%o A057370 (PARI) is(k) = fordiv(k, y, if(issquare(k^2 - 4*(y+k/y)^3), return(1))); 0; \\ _Jinyuan Wang_, May 01 2021
%Y A057370 Cf. A057369, A057371, A057372, A057373, A057445.
%K A057370 nonn
%O A057370 1,1
%A A057370 _Naohiro Nomoto_, Sep 23 2000
%E A057370 More terms and clearer definition from _Jinyuan Wang_, May 01 2021