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Search: id:A084737
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| A084737 |
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Beginning with 1, numbers such that {a(n+2)-a(n+1)}/{a(n+1)-a(n)} =prime(n). |
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1
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| 1, 2, 4, 10, 40, 250, 2560, 32590, 543100, 10242790, 233335660, 6703028890, 207263519020, 7628001653830, 311878265181040, 13394639596851070, 628284422185342480, 33217442899375387210, 1955977793053588026280
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OFFSET
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1,2
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COMMENT
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Successive differences are primorials.
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EXAMPLE
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a(3) = 4, a(4) = 10 and a(5)= 40 and (40-10}/(10-4) = 5 = prime(3).
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CROSSREFS
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Sequence in context: A108801 A111022 A086852 this_sequence A153757 A159860 A013549
Adjacent sequences: A084734 A084735 A084736 this_sequence A084738 A084739 A084740
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), Jun 14 2003
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 17 2003
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