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A141239 Sequence of k such that starting with P(0) = 29 then k(n)*P(n-1)*(k(n)*P(n-1)-1)-1 is the least prime = P(n). 4

%I #10 Jun 22 2022 10:57:18

%S 1,2,16,3,9,11,136,219,51,1428

%N Sequence of k such that starting with P(0) = 29 then k(n)*P(n-1)*(k(n)*P(n-1)-1)-1 is the least prime = P(n).

%e 1*29*(1*29-1)-1 = 811 (prime) so k(1) = 1, P(1) = 811.

%o (PARI) P=29;for(i=1,20,k=0;while(!ispseudoprime(t=k++*P*(k*P-1)-1),);P=t;print1(k", ")) \\ _Charles R Greathouse IV_, Dec 27 2011

%Y Cf. A141233-A141240.

%K nonn

%O 1,2

%A _Pierre CAMI_, Jun 16 2008

%E a(10) from _Charles R Greathouse IV_, Dec 27 2011

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)