OFFSET
1,2
PROG
(PARI) a(n) = my(v=vector(3*n^3)); for(i=1, n, for(j=i, n, for(k=j, n, v[i^3+j^3+k^3]+=1))); sum(i=1, #v, v[i]>0);
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jul 17 2024
STATUS
approved