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Search: id:A065534
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| A065534 |
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a(n) is smallest prime > 10*a(n-1), a(1) = 5. |
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+0
1
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| 5, 53, 541, 5413, 54133, 541339, 5413391, 54133921, 541339231, 5413392311, 54133923121, 541339231241, 5413392312463, 54133923124643, 541339231246433, 5413392312464369, 54133923124643743, 541339231246437473
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,100
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MATHEMATICA
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NextPrim[n_Integer] := Block[ {k = n + 1}, While[ !PrimeQ[k], k++ ]; Return[k]]; a[1] = 5; a[n_] := NextPrim[ 10*a[n - 1]]; Table[ a[n], {n, 1, 20} ]
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PROGRAM
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(PARI) { for (n=1, 100, if (n>1, a=nextprime(10*a), a=5); write("b065534.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Oct 21 2009]
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CROSSREFS
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Cf. A065122.
Sequence in context: A069617 A058390 A069592 this_sequence A123788 A036910 A036916
Adjacent sequences: A065531 A065532 A065533 this_sequence A065535 A065536 A065537
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 28 2001
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