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A169606
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a(2n-1) = prime(n+2)-3, a(2n) = prime(n+2)-2.
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2
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2, 3, 4, 5, 8, 9, 10, 11, 14, 15, 16, 17, 20, 21, 26, 27, 28, 29, 34, 35, 38, 39, 40, 41, 44, 45, 50, 51, 56, 57, 58, 59, 64, 65, 68, 69, 70, 71, 76, 77, 80, 81, 86, 87, 94, 95, 98, 99, 100, 101, 104, 105, 106, 107, 110, 111, 124, 125, 128, 129, 134, 135, 136, 137, 146
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OFFSET
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1,1
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LINKS
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FORMULA
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EXAMPLE
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a(1)=5-3=2; a(2)=5-2=3; a(3)=7-3=4.
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MATHEMATICA
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Table[If[OddQ[n], Prime[(n+1)/2+2]-3, Prime[n/2+2]-2], {n, 70}] (* Harvey P. Dale, Oct 25 2020 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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