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Search: id:A154779
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| 1, 1, 2, 2, 4, 6, 12, 17, 34, 55, 98, 161, 288, 448, 811, 1265, 2145, 3425, 5860, 9305, 15384, 24690, 40445, 64715
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OFFSET
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1,3
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COMMENT
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Does the ratio of consecutive terms, a(n+1)/a(n), tend to a finite limit?
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PROGRAM
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(PARI) print1("1, ", #last=[35]); for(d=3, 30, new=[]; forprime( p=0, 9, for(k=1, #last, isprime((last[k]^2\10^d+t*last[k]/5)%10) & new=concat(new, last[k]+p*10^(d-1)))); print1(", ", #last=new))
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CROSSREFS
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Sequence in context: A000672 A115868 A103299 this_sequence A010101 A129860 A028408
Adjacent sequences: A154776 A154777 A154778 this_sequence A154780 A154781 A154782
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KEYWORD
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nonn
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AUTHOR
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M. F. Hasler (MHasler(AT)univ-ag.fr), Jan 24 2009
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