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Search: id:A162904
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A162904 Primes 2 less than a tetrahedral number. +0
1
2, 163, 967, 4493, 9137, 32507, 39709, 47903, 67523, 176849, 221813, 708559, 1543463, 1726667, 2481113, 2997409, 3428423, 3737579, 4410547, 4775383, 5774273, 6209893, 6903563, 9001627, 9585343, 10507397, 11153833, 15596033 (list; graph; listen)
OFFSET

1,1

COMMENT

Primes of the form A000292(k)-2.

EXAMPLE

2 = 4-2 = A000292(2)-2. 163 = 165-2 = A000292(9)-2. 967 = 969-2 = A000292(17)-2.

MATHEMATICA

s1=s2=0; lst={}; Do[s2+=s1+=n; If[PrimeQ[s2-2], AppendTo[lst, s2-2]], {n, 2*6!}]; lst

CROSSREFS

Cf. A000292

Sequence in context: A064071 A069580 A109420 this_sequence A139928 A142602 A005020

Adjacent sequences: A162901 A162902 A162903 this_sequence A162905 A162906 A162907

KEYWORD

nonn

AUTHOR

Vladimir Orlovsky (4vladimir(AT)gmail.com), Jul 16 2009

EXTENSIONS

Definition rephrased by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 27 2009

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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