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A318933
For the n-th number k =
A318932
(n) such that the Diophantine equation y^2 - k = x^3 has a solution, a(n) gives the number of solutions.
2
3, 1, 1, 1, 1, 4, 5, 1, 2, 2, 1, 8, 1, 1, 1, 4, 1, 1, 1, 2, 1, 1, 1, 1, 4, 3, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 3, 2, 3, 4, 2, 1, 1, 6, 1, 1, 4, 1, 1, 4, 1, 1, 1, 1, 1, 1, 6
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OFFSET
1,1
COMMENTS
Hemer gives a(n) for all values of k <= 100.
LINKS
Hugo Pfoertner,
Table of n, a(n) for n = 1..1000
Joerg Arndt,
Table of A318932(n) A318933(n)
, from Hemer's paper.
Ove Hemer,
Notes on the diophantine equation y^2 - k = x^3
, Arkiv för Matematik 3.1 (1954): 67-77.
CROSSREFS
Cf.
A318932
.
Sequence in context:
A231147
A046534
A224489
*
A361239
A140334
A131324
Adjacent sequences:
A318930
A318931
A318932
*
A318934
A318935
A318936
KEYWORD
nonn
AUTHOR
N. J. A. Sloane
, Sep 12 2018
EXTENSIONS
Terms up to a(59) from Hemer's paper added by
Joerg Arndt
, Aug 28 2021
STATUS
approved
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Last modified August 28 20:13 EDT 2024. Contains 375508 sequences. (Running on oeis4.)