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A128420 Numbers n such that p(n)# + p(n+1)# -1 is prime, where p(n)# is the product of first n primes (A002110). 7

%I #5 Mar 31 2012 13:22:05

%S 0,1,3,6,8,10,12,37,72,92,142,295,1529,1625,1914,2276,4423

%N Numbers n such that p(n)# + p(n+1)# -1 is prime, where p(n)# is the product of first n primes (A002110).

%Y Cf. A002110, A057704, A128421.

%K nonn

%O 1,3

%A _Pierre CAMI_, Mar 02 2007

%E Corrected by _Emeric Deutsch_, Mar 06 2007

%E Edited by _Ray Chandler_, Mar 13 2007

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Last modified June 21 02:34 EDT 2024. Contains 373535 sequences. (Running on oeis4.)