A203322 Numbers not of the form x^2+2*y^3+3*z^4 for nonnegative x, y, z.

8, 10, 13, 15, 22, 24, 26, 29, 31, 33, 34, 37, 40, 42, 43, 45, 46, 47, 53, 56, 60, 62, 71, 72, 74, 76, 77, 78, 85, 87, 88, 91, 92, 94, 95, 96, 98, 101, 104, 107, 108, 109, 110, 115, 117, 120, 122, 125, 130, 133, 134, 136, 139, 141, 142, 143, 152, 155, 158, 159, 161, 162, 165, 168, 170, 173, 179, 181, 182, 184, 186, 187, 189

Offset

1,1

Comments

Suggested by A055042.

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Maple

N:= 1000: # 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({$1..N} minus E3, list)); # Robert Israel, Aug 17 2020

Crossrefs

Cf. A055042.

Sequence in context: A184116 A319795 A068358 * A120166 A030732 A167487

Adjacent sequences: A203319 A203320 A203321 * A203323 A203324 A203325

Keyword

nonn

Author

N. J. A. Sloane, Jan 20 2012

Status

approved