OFFSET
1,2
COMMENTS
Any further terms are greater than 10^30. - Charles R Greathouse IV, Oct 02 2015
PROG
(PARI) list(lim)=my(v=List(), X, t); for(x=0, logint(lim\=1, 3), X=3^x; for(y=0, sqrtnint(lim-X, 3), if(ispolygonal(t=X+y^3, 3), listput(v, t)))); Set(v) \\ Charles R Greathouse IV, Sep 28 2015
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Alex Ratushnyak, Sep 28 2015
EXTENSIONS
a(17)-a(19) from Charles R Greathouse IV, Sep 28 2015
STATUS
approved