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A134701 Initial prime, greater than 3, of a prime chain of length n under the iteration x->2x-3. 1
5, 5, 5, 5, 13, 283, 283, 1823, 443119823, 35332754383, 57704757113, 69478435945493, 2235755385712423 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

a(3) = 5 because 5, 5*2-3=7, 7*2-3=11 and 11*2-3=19 are primes.

CROSSREFS

Cf. A084954.

Sequence in context: A003870 A304681 A076407 * A291655 A078097 A285243

Adjacent sequences:  A134698 A134699 A134700 * A134702 A134703 A134704

KEYWORD

nonn,more

AUTHOR

Don Reble, Nov 07 2007

STATUS

approved

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Last modified May 19 06:41 EDT 2019. Contains 323386 sequences. (Running on oeis4.)