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A128421
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Numbers n such that p(n)# + p(n+1)# +1 is prime, where p(n)# is the product of first n primes (A002110).
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7
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2, 3, 4, 5, 6, 8, 20, 56, 101, 108, 141, 202, 265, 364, 401, 1035, 1588, 3062, 4191, 4579
(list; graph; refs; listen; history; internal format)
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