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A162454 Primes of the form (prime(j)#)^2 + prime(j)# + 1. 1
7, 43, 901830931 (list; graph; refs; listen; history; text; internal format)
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

Amiram Eldar, Table of n, a(n) for n = 1..5

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

Adjacent sequences:  A162451 A162452 A162453 * A162455 A162456 A162457

KEYWORD

nonn,bref

AUTHOR

Daniel Tisdale, Jul 03 2009

STATUS

approved

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Last modified October 26 07:48 EDT 2021. Contains 348267 sequences. (Running on oeis4.)