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A099231 Numbers n such that n*((2^61-1)^4) - 1 and n*((2^61-1)^4) + 1 are twin primes. 2
53820, 60042, 84978, 101862, 110502, 178812, 181668, 222378, 245910, 266808, 275280, 310392, 353568, 353598, 354750, 373692, 477162, 491838, 498132 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..19.

MATHEMATICA

With[{c=(2^61-1)^4}, Select[Range[500000], AllTrue[c*#+{1, -1}, PrimeQ]&]] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Aug 30 2015 *)

CROSSREFS

Cf. A099229 A099230.

Sequence in context: A237373 A251369 A252035 * A237547 A100422 A099010

Adjacent sequences:  A099228 A099229 A099230 * A099232 A099233 A099234

KEYWORD

nonn

AUTHOR

Pierre CAMI, Oct 07 2004

EXTENSIONS

More terms from Harvey P. Dale, Aug 30 2015

STATUS

approved

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Last modified January 19 00:40 EST 2020. Contains 331030 sequences. (Running on oeis4.)