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A243857 Odd numbers n divisible by 3 such that for all k >= 1 the numbers n*2^k + 1 and n*2^(k+1) + 1 do not form a pair of primes. 1
32469, 42717, 45009, 57669, 64377, 64893, 66741, 76389, 78363, 81723, 95259, 95283, 165567, 203811, 216627, 218193, 218949, 240819, 255153, 272523, 282147, 308481, 317841, 324981, 327879, 338733, 347289, 355479, 359847, 364383, 414417, 424917, 425829, 433107 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..34.

CROSSREFS

Cf. A243858.

Sequence in context: A156423 A236656 A233680 * A028240 A251000 A134698

Adjacent sequences:  A243854 A243855 A243856 * A243858 A243859 A243860

KEYWORD

nonn

AUTHOR

Arkadiusz Wesolowski, Jun 12 2014

STATUS

approved

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Last modified March 25 03:50 EDT 2019. Contains 321450 sequences. (Running on oeis4.)