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Search: id:A118726
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| 0, 3, 25, 224, 2073, 19646, 189267, 1845115, 18148809, 179759988, 1790426165, 17914292003, 179925732000, 1812940879359, 18317715471523, 185522533906512, 1882911883226921, 19145400126464070, 194989385131146079
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OFFSET
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0,2
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COMMENT
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If (2n+1)>5 is not divisible by 5 and (2n+1) divides a(n) then (2n+1) is often prime. What is the set of exceptions?
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PROGRAM
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(PARI) a(n)=sum(k=0, n, binomial(n+k, k)*fibonacci(n+k))
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CROSSREFS
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Sequence in context: A037587 A112240 A024217 this_sequence A066221 A134272 A099913
Adjacent sequences: A118723 A118724 A118725 this_sequence A118727 A118728 A118729
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KEYWORD
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nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), May 21 2006
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