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Search: id:A130735
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| A130735 |
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Primes n such that n+2, n*(n+2)+6 and n*(n+2)+8 are also prime. |
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| 5, 11, 2591, 4127, 10427, 11831, 15887, 28547, 56921, 60257, 61331, 62927, 65717, 70487, 74411, 77417, 77687, 81281, 87221, 100391, 104087, 115301, 116687, 121367, 124181, 129287, 148691, 149111, 158141, 173741, 199151, 208961
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OFFSET
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1,1
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MAPLE
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a:=proc(n) local p: p:=ithprime(n):if isprime(p+2)=true and isprime(p*(p+2)+6) =true and isprime(p*(p+2)+8)=true then p else end if end proc: seq(a(n), n= 1 .. 20000); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jul 25 2007
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CROSSREFS
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Sequence in context: A056253 A101832 A046957 this_sequence A082019 A055676 A022835
Adjacent sequences: A130732 A130733 A130734 this_sequence A130736 A130737 A130738
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KEYWORD
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nonn
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AUTHOR
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Ray G. Opao (1260(AT)email.com), Jul 06 2007
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Jul 25 2007
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