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A356710
Numbers k such that Mordell's equation y^2 = x^3 + k^3 has exactly 3 integral solutions.
7
7, 11, 21, 22, 23, 26, 34, 35, 38, 44, 46, 63, 71, 74, 86, 92, 95, 99, 110, 122, 129, 136, 152, 155, 158, 170, 175, 177, 183, 189, 190, 198, 201, 203, 207, 211
OFFSET
1,1
COMMENTS
Cube root of A179147.
EXAMPLE
7 is a term since the equation y^2 = x^3 + 7^3 has 3 solutions (-7,0) and (21,+-98).
CROSSREFS
Indices of 3 in A356706, of 1 in A356707, and of 2 in A356708.
Sequence in context: A106674 A184063 A076854 * A194828 A035704 A211436
KEYWORD
nonn,hard,more
AUTHOR
Jianing Song, Aug 23 2022
EXTENSIONS
a(30)-a(36) from Max Alekseyev, Jun 01 2023
STATUS
approved