A337133 Numbers of the form x^2+2*y^3+3*z^4 for nonnegative x, y, z.

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

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

Complement of A203322.

Sequence in context: A326643 A222030 A327261 * A062490 A211543 A180711

Adjacent sequences: A337130 A337131 A337132 * A337134 A337135 A337136

Keyword

nonn

Author

Robert Israel, Aug 17 2020

Status

approved