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A165448 Product of prime numbers between 2^n+1 and 2^(n+1), inclusive. 0
2, 3, 35, 143, 6678671, 584803025179, 34227405074603836560875299, 16008643688606125328574585946049488062084747136988251, 497369008478585535856296246658391242478488212329477774761792556414828431057586895468763959997722781406315137061 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

a(1)+1, a(2)+1 and a(3)+1 are squares.

LINKS

Table of n, a(n) for n=0..8.

PROG

(PARI) a(n)=prod(i=2^n+1, 2^(n+1), if(isprime(i), i, 1))

CROSSREFS

Cf. A000040, A000079, A157625.

Sequence in context: A141503 A199696 A234423 * A111459 A042663 A072291

Adjacent sequences:  A165445 A165446 A165447 * A165449 A165450 A165451

KEYWORD

nonn

AUTHOR

Jaume Oliver Lafont, Sep 20 2009

STATUS

approved

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Last modified July 19 22:14 EDT 2019. Contains 325168 sequences. (Running on oeis4.)