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 A141237 Sequence of k such that starting with P(0)=19 then k(n)*P(n-1)*(k(n)*P(n-1)-1)-1 is the least prime = P(n). 3
 3, 1, 9, 14, 123, 39, 39, 549, 96, 701 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE 1*19*(1*19-1)-1=341 composite 2*19*(2*19-1)-1=1405 composite 3*19*(3*19-1)-1=3191 prime so k(1)=3 P(1)=3191 PROG (PARI) P=19; 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 CROSSREFS Cf. A141233-A141240. Sequence in context: A157383 A232598 A174510 * A318391 A157399 A288852 Adjacent sequences:  A141234 A141235 A141236 * A141238 A141239 A141240 KEYWORD nonn AUTHOR Pierre CAMI, Jun 16 2008 EXTENSIONS a(9)-a(10) from Charles R Greathouse IV, Dec 27 2011 STATUS approved

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Last modified May 8 02:26 EDT 2021. Contains 343652 sequences. (Running on oeis4.)