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A162454
Primes of the form (prime(j)#)^2 + prime(j)# + 1.
1
7, 43, 901830931
OFFSET
1,1
COMMENTS
Generated from prime(j)# = A002110(j) at j= 1, 2, 6, 115, 152, ... [R. J. Mathar, Jul 10 2009]
a(6) ~ 4.145...*10^2477 corresponds to j = 420. - Amiram Eldar, Jul 18 2019
LINKS
MATHEMATICA
Select[Table[(Product[Prime[i], {i, 1, j}])^2 + Product[Prime[i], {i, 1, j}]+1, {j, 1, 10}], PrimeQ]
CROSSREFS
Cf. A002110.
Sequence in context: A258182 A048605 A165210 * A203210 A323923 A026116
KEYWORD
nonn,bref
AUTHOR
Daniel Tisdale, Jul 03 2009
STATUS
approved