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A141238
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Sequence of k such that starting with P(0)=23 then k(n)*P(n-1)*(k(n)*P(n-1)-1)-1 is the least prime = P(n).
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3
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OFFSET
| 1,1
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EXAMPLE
| 1*23*(1*23-1)-1=505 composite
2*23*(2*23-1)-1=2069 prime so k(1)=2 P(1)=2069
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PROG
| (PARI) P=23; 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
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CROSSREFS
| Cf. A141233-A141240.
Sequence in context: A136156 A191657 A155796 * A094690 A010249 A177438
Adjacent sequences: A141235 A141236 A141237 * A141239 A141240 A141241
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KEYWORD
| nonn
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AUTHOR
| Pierre CAMI (pierre-cami(AT)bbox.fr), Jun 16 2008
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EXTENSIONS
| a(10) from Charles R Greathouse IV, Dec 27 2011
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