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A350977
Numbers k such that x^3 - y^2 = k has no solution.
1
3, 4, 6, 9, 10, 12, 14, 17, 21, 22, 27, 30, 33, 34, 37, 41, 42, 46, 50, 57, 58, 62, 65, 66, 69, 70, 73, 75, 77, 78, 82, 85, 86, 90, 93, 94, 97, 98, 171, 176, 275, 475, 539, 1315, 2288, 2743, 5491
OFFSET
1,1
COMMENTS
The 4 seems to be in error here, because x=2, y=2 or x=5, y=11 are a solution to x^3-y^2=4. [No entry here should be in A087285]. - R. J. Mathar, Mar 07 2022
Apparently y>0 is enforced; otherwise x=3, y=0 would solve x^3-y^2=27. - R. J. Mathar, Mar 07 2022
REFERENCES
H. Brocard, Query 2312, L'Intermédiaire des Mathématiciens, 10 (1903), 283-284.
CROSSREFS
Cf. A350976. Apparently an erroneous version of A081121.
Sequence in context: A153464 A288463 A189297 * A047231 A050131 A332023
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Mar 06 2022
STATUS
approved