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Search: id:A064968
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| A064968 |
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1000000000n+1, 1000000000n+3, 1000000000n+7, 1000000000n+9 are all primes. |
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+0
1
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| 14965, 16813, 20767, 23083, 34270, 40198, 93238, 112096, 189802, 192484, 251248, 333946, 334969, 363514, 374107, 375127, 376765, 383473, 405046, 419458, 462928, 498139, 649948, 703246, 704374, 732463, 767101, 781885, 806467, 812902, 842428
(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,...,1000
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MATHEMATICA
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Select[Range[10^6], PrimeQ[10^9# + 1] && PrimeQ[10^9# + 3] && PrimeQ[10^9# + 7] && PrimeQ[10^9# + 9] &]
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PROGRAM
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(PARI) { n=0; for (m=1, 10^9, b=10^9*m; if(isprime(b + 1) && isprime(b + 3) && isprime(b + 7) && isprime(b + 9), write("b064968.txt", n++, " ", m); if (n==1000, return)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Oct 01 2009]
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CROSSREFS
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Cf. A007811 and A064687.
Sequence in context: A035919 A023045 A031815 this_sequence A145275 A064730 A081635
Adjacent sequences: A064965 A064966 A064967 this_sequence A064969 A064970 A064971
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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), Oct 29 2001
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