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A106274 Numbers n for which the absolute value of the discriminant of the polynomial x^n - x^(n-1) -...- x - 1 is prime. 1
2, 4, 6, 26, 158 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

This polynomial is the characteristic polynomial of the Fibonacci and Lucas n-step recursions. Are the n-step recursions different -- in some way -- for the values of n that yield a prime discriminant? No other n < 10000.

LINKS

Eric Weisstein's World of Mathematics, Fibonacci n-Step

CROSSREFS

Cf. A106273 (discriminant of the polynomial x^n-x^(n-1)-...-x-1).

Sequence in context: A172451 A086172 A141526 * A204661 A077633 A006933

Adjacent sequences:  A106271 A106272 A106273 * A106275 A106276 A106277

KEYWORD

hard,more,nonn

AUTHOR

T. D. Noe (noe(AT)sspectra.com), May 02 2005

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Last modified February 15 07:58 EST 2012. Contains 205717 sequences.