OFFSET
1,1
EXAMPLE
a(1) = 1024 = 512+512 = 32*32; 512*512 = (32+32)^3.
PROG
(PARI) is(k) = fordiv(k, y, if(issquare(k^2 - 4*(y+k/y)^3), return(1))); 0; \\ Jinyuan Wang, May 01 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
Naohiro Nomoto, Sep 23 2000
EXTENSIONS
More terms and clearer definition from Jinyuan Wang, May 01 2021
STATUS
approved