OFFSET
1,3
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
MAPLE
N:= 200: # for terms <= N
E1:= {seq(3*z^4, z=0..floor((N/3)^(1/4)))}:
E2:= map(t -> seq(t+2*y^3, y=0..floor(((N-t)/2)^(1/3))), E1):
E3:= map(t -> seq(t+x^2, x=0..floor(sqrt(N-t))), E2):
sort(convert(E3, list));
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert Israel, Aug 17 2020
STATUS
approved