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A100465 Let p(1)=2, p(2)=3, p(3)=5, ... denote the primes and let E(n) = 1 + p(1) * p(2) * ... * p(n). Sequence gives primes p such that p(n+2) | E(n). 1
7, 271, 307, 673 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

No other terms for p < 80000000.

LINKS

Table of n, a(n) for n=1..4.

EXAMPLE

7 is a term of the sequence, because it is the 4th prime and divides E(2)=2*3+1=7 trivially. - Martin Ehrenstein, Feb 05 2021

CROSSREFS

See A066735 for further information.

Cf. A006862 Euclid numbers.

Sequence in context: A015089 A179565 A069449 * A140031 A066413 A332127

Adjacent sequences:  A100462 A100463 A100464 * A100466 A100467 A100468

KEYWORD

nonn,more

AUTHOR

Lévai Gábor (gablevai(AT)vipmail.hu), Nov 23 2004

EXTENSIONS

a(2) corrected by Martin Ehrenstein, Feb 05 2021

STATUS

approved

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Last modified April 19 17:46 EDT 2021. Contains 343117 sequences. (Running on oeis4.)