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A238198
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Triangle of the discriminant of the polynomials x^n - x^m + 1, where 0 < m < n.
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5
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-3, -23, -23, 229, 144, 229, 2869, 3017, 3017, 2869, -43531, -33856, -19683, -33856, -43531, -776887, -811043, -816631, -816631, -811043, -776887, 15953673, 13424896, 16692841, 5308416, 16692841, 13424896, 15953673, 370643273, 384126317, 239483061
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refs;
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history;
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OFFSET
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1,1
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COMMENTS
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Boyd et al. mention these numbers.
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LINKS
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T. D. Noe, Rows n = 1..100 of triangle, flattened
David W. Boyd, Greg Martin, and Mark Thom, Squarefree values of trinomial discriminants, arXiv 1402.5148 [math.NT], 2014.
William Craig, Cubefree Trinomial Discriminants, arXiv:1901.03653 [math.NT], 2019.
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MATHEMATICA
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Flatten[Table[Discriminant[x^n - x^m + 1, x], {n, 2, 9}, {m, n - 1}]]
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CROSSREFS
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Cf. A238195 (discriminant of x^n - x^m - 1).
Cf. A238196 (discriminant of x^n + x^m - 1).
Cf. A238197 (discriminant of x^n + x^m + 1).
Cf. A238199 (union).
Sequence in context: A298885 A298657 A299609 * A178177 A124076 A153834
Adjacent sequences: A238195 A238196 A238197 * A238199 A238200 A238201
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KEYWORD
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sign,tabl
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AUTHOR
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T. D. Noe, Feb 24 2014
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STATUS
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approved
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