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A256123
Primes p such that all six iterations of the map p->2p+nextprime(p) give primes.
0
1854811727, 1988791547, 2498711497, 2866433161, 3337303943, 3514209079, 5078536369, 5856521807, 6057449263, 7402496771, 8158654937, 8426760781, 8829158339, 10337846809, 11487954299, 11867001431, 12967520437, 14336558143
OFFSET
1,1
COMMENTS
First prime with 7 iterations all giving primes is a(36)=44439344567.
CROSSREFS
Subsequence of A255694.
Sequence in context: A090874 A071371 A052094 * A251401 A325900 A251282
KEYWORD
nonn
AUTHOR
Zak Seidov, Mar 15 2015
STATUS
approved