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A337133
Numbers of the form x^2+2*y^3+3*z^4 for nonnegative x, y, z.
1
0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 12, 14, 16, 17, 18, 19, 20, 21, 23, 25, 27, 28, 30, 32, 35, 36, 38, 39, 41, 44, 48, 49, 50, 51, 52, 54, 55, 57, 58, 59, 61, 63, 64, 65, 66, 67, 68, 69, 70, 73, 75, 79, 80, 81, 82, 83, 84, 86, 89, 90, 93, 97, 99, 100, 102, 103, 105, 106, 111, 112, 113, 114, 116, 118
OFFSET
1,3
LINKS
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
Complement of A203322.
Sequence in context: A326643 A222030 A327261 * A062490 A211543 A180711
KEYWORD
nonn
AUTHOR
Robert Israel, Aug 17 2020
STATUS
approved