1,1

The values of x are 422481, 20615673, ... (without repetition).

Table of n, a(n) for n=1..6.

a(1) = 95800 because 95800^4 = 422481^4 - 217519^4 - 414560^4.

a(2) = 217519 because 217519^4 = 422481^4 - 95800^4 - 414560^4.

Cf. A175610.

Sequence in context: A235783 A235788 A235564 * A078518 A234478 A130001

Adjacent sequences: A175595 A175596 A175597 * A175599 A175600 A175601

nonn,more

Juri-Stepan Gerasimov, Jul 21 2010, Jul 24 2010

First 0 removed by Jinyuan Wang, Feb 20 2020

approved