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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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8
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2, 23, 233, 2333, 23333, 233341, 2333459, 23334601, 233346041, 2333460413, 23334604169, 233346041759, 2333460417637, 23334604176379, 233346041763823, 2333460417638239, 23334604176382489, 233346041763824911
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Harry J. Smith, Table of n, a(n) for n=1,...,100
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MATHEMATICA
| 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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PROG
| (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
| Cf. A024770, A055496
Sequence in context: A037645 A100893 A198972 * A127889 A088603 A048549
Adjacent sequences: A065119 A065120 A065121 * A065123 A065124 A065125
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KEYWORD
| nonn
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AUTHOR
| Henry Bottomley (se16(AT)btinternet.com), Nov 13 2001
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EXTENSIONS
| More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 28 2001
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