login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A367984
Numbers that are the sum of a nonnegative cube and a fourth power of a nonnegative integer.
1
0, 1, 2, 8, 9, 16, 17, 24, 27, 28, 43, 64, 65, 80, 81, 82, 89, 108, 125, 126, 141, 145, 206, 216, 217, 232, 256, 257, 264, 283, 297, 320, 343, 344, 359, 381, 424, 472, 512, 513, 528, 593, 599, 625, 626, 633, 652, 689, 729, 730, 745, 750, 768, 810, 841, 968, 985, 1000
OFFSET
1,3
LINKS
MAPLE
M:= 10000: # for terms <= M
Cubes:= {seq(i^3, i=0..floor(M^(1/3)))}:
Fourths:= {seq(i^4, i=0..floor(M^(1/4)))}:
sort(convert(select(`<=`, {seq(seq(a+b, a=Cubes), b=Fourths)}, M), list)); # Robert Israel, Dec 05 2024
CROSSREFS
KEYWORD
nonn,changed
AUTHOR
Ilya Gutkovskiy, Dec 07 2023
STATUS
approved