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A112529 Numbers n such that prime(n) +/- 2n are both primes. 2
7, 9, 12, 24, 30, 36, 63, 90, 102, 117, 126, 135, 150, 156, 165, 171, 180, 183, 225, 234, 270, 285, 369, 390, 399, 402, 447, 456, 501, 507, 537, 570, 582, 624, 627, 642, 651, 654, 660, 720, 735, 762, 777, 855, 864, 870, 885, 930, 936, 945, 1023, 1029, 1035 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Cf. A064403: Prime(n) +/- n are both primes

LINKS

Table of n, a(n) for n=1..53.

MATHEMATICA

Select[Range[2000], PrimeQ[Prime[ # ]+2# ]&&PrimeQ[Prime[ # ]-2# ]&]

CROSSREFS

Cf. A064403.

Sequence in context: A048589 A121056 A174189 * A161892 A056528 A055565

Adjacent sequences:  A112526 A112527 A112528 * A112530 A112531 A112532

KEYWORD

nonn

AUTHOR

Zak Seidov, Sep 10 2005

STATUS

approved

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Last modified August 20 05:25 EDT 2019. Contains 326139 sequences. (Running on oeis4.)