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A259453 The y value of the unique nontrivial solution to x^3 + d*y^3 = 1 for all admissible (d = 2,7,9,17,..., A005988). 3
1, -1, 1, -7, 3, 7, -1, 1, -3, 2, -1, 1, -2, -1, 1, 3, -1, 1, -3, -1, 1, 2, -1, 1, -2, -42, 3, -1, 1, -3, -1, 1, -1, 1, 2, 3, 6, -1, 1, -6, -3, -2, -1, 1, -1, 1, 3, -1, 1, -3, 2, 4, -1, 1, -4, -2, -1, 1, -21, 3, -1, 1, -3, -1, 1, 2, -1, 1, -2, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
REFERENCES
H. C. Williams and C. R. Zarnke, Computation of the solutions of the Diophantine equation x^3+dy^3=1, Proc. Conf. Numerical Maths., Winnipeg (1971), 671-676.
LINKS
H. C. Williams and C. R. Zarnke, Computation of the solutions of the Diophantine equation x^3+dy^3=1, Proc. Conf. Numerical Maths., Winnipeg (1971), 671-676. (Annotated scanned copy)
H. C. Williams and R. Holte, Computation of the solution of x^3 + D y^3 = 1, Mathematics of Computation, Vol. 31, No. 139. (Jul., 1977), pp. 778-785.
CROSSREFS
Cf. A005988, A055735 (x values).
Sequence in context: A253891 A309612 A021856 * A096715 A242939 A242938
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Jun 28 2015
EXTENSIONS
More terms from Sean A. Irvine, Nov 17 2016
STATUS
approved

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)