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A144131 Primes of the form T_4(n), where T_4(x) = 8x^4 - 8x^2 + 1 is the fourth Chebyshev polynomial (of the first kind). 5
97, 577, 4801, 32257, 79201, 305761, 665857, 1039681, 7380481, 8380417, 10681441, 11995201, 18495361, 42448897, 49980001, 54100801, 63101377, 68001121, 96911041, 110736961, 227143297, 266851201, 296071777, 398240641, 479694337 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Sequence is infinite under Bunyakovsky's conjecture. - Charles R Greathouse IV, May 29 2013

LINKS

Table of n, a(n) for n=1..25.

MATHEMATICA

lst={}; Do[p=ChebyshevT[4, n]; If[PrimeQ[p], AppendTo[lst, p]], {n, 9^3}]; lst

PROG

(PARI) select(isprime, vector(100, n, polchebyshev(4, 1, n))) \\ Charles R Greathouse IV, May 29 2013

CROSSREFS

Sequence in context: A204710 A142765 A144130 * A130833 A130873 A193411

Adjacent sequences:  A144128 A144129 A144130 * A144132 A144133 A144134

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Sep 11 2008

STATUS

approved

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Last modified November 17 20:56 EST 2018. Contains 317278 sequences. (Running on oeis4.)