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A144718 a(n) = n-th prime arising A144717. 12
3, 5, 13, 61, 421, 3361, 30241, 332641, 3991681, 55883521, 950019841, 19000396801, 456009523201, 13680285696001, 465129713664001, 20465707401216001, 1473530932887552001, 125250129295441920001, 10771511119408005120001 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) = 2*Product_{k=1..n} A144717(k) + 1.
MATHEMATICA
k = 2; a = {}; Do[If[PrimeQ[k n + 1], AppendTo[a, k n+1 ]; k = k n ], {n, 1, 3000}]; a
CROSSREFS
Sequence in context: A181848 A243161 A153207 * A347866 A066141 A159293
KEYWORD
nonn
AUTHOR
Artur Jasinski, Sep 19 2008
STATUS
approved

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Last modified May 18 03:43 EDT 2024. Contains 372618 sequences. (Running on oeis4.)