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A154734 Integers k of the form k=n^2-k, such that k-+1 are primes,k(0)=2. 1
2, 4, 12, 138, 822, 2082, 3918, 21738, 39342, 62130, 70878, 106032, 117372, 129288, 135462, 182712, 512580, 524802, 575130, 682698, 769422, 799482, 893118, 1008912, 1026030, 1043292, 1828830, 2368578, 2447580, 3247428, 3278082, 3465030 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..32.

MATHEMATICA

k=2; lst={k}; Do[k=n^2-k; If[PrimeQ[k-1]&&PrimeQ[k+1], AppendTo[lst, k]], {n, 8!}]; lst

CROSSREFS

Sequence in context: A154882 A062000 A053040 * A291827 A287059 A059085

Adjacent sequences:  A154731 A154732 A154733 * A154735 A154736 A154737

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Jan 14 2009

STATUS

approved

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Last modified October 20 22:44 EDT 2019. Contains 328291 sequences. (Running on oeis4.)