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Search: id:A065122
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| A065122 |
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a(1) = 2; a(n) is smallest prime > 10*a(n-1). |
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+0
7
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| 2, 23, 233, 2333, 23333, 233341, 2333459, 23334601, 233346041, 2333460413, 23334604169, 233346041759, 2333460417637, 23334604176379, 233346041763823, 2333460417638239, 23334604176382489, 233346041763824911
(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] = 2; 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=2); write("b065122.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Oct 10 2009]
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CROSSREFS
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Cf. A024770, A055496
Sequence in context: A037757 A037645 A100893 this_sequence A127889 A088603 A048549
Adjacent sequences: A065119 A065120 A065121 this_sequence A065123 A065124 A065125
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KEYWORD
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nonn
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AUTHOR
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Henry Bottomley (se16(AT)btinternet.com), Nov 13 2001
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 28 2001
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