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A116457
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a(1) = 1; a(n) = prime((a(n-1)+3)/2).
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0
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1, 3, 5, 7, 11, 17, 29, 53, 107, 257, 733, 2503, 10211, 49739, 285377, 1909561, 14736529, 129812899, 1293238351, 14448382721, 179668662139, 2470072307533, 37316454626819
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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a[1]=1; a[n_]:=a[n]=Prime[(a[n-1]+3)/2]; Table[a[n], {n, 20}]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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