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A086124
Primes generated by linear recursion: f[x]=p[n].f[x-1]+2, f[1]=1.
1
5, 191, 8831183, 559832762721564181, 3655022053493602810873312808337814473758207442937
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..5.
MATHEMATICA
f[x_] := Prime[x]*f[x-1]+2; f[1]=1; Do[s=f[n]; If[PrimeQ[s], Print[n]], {n, 1, 1000}]
CROSSREFS
Cf.
A000668
,
A076481
,
A086122
,
A086123
.
Sequence in context:
A222363
A316330
A015102
*
A211505
A198485
A177192
Adjacent sequences:
A086121
A086122
A086123
*
A086125
A086126
A086127
KEYWORD
nonn
AUTHOR
Labos Elemer
, Jul 23 2003
STATUS
approved
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Last modified May 4 12:19 EDT 2024. Contains 372243 sequences. (Running on oeis4.)