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A055398
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Result of fourth stage of sieve of Eratosthenes (after eliminating multiples of 2, 3, 5, 7).
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4
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2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 121, 127, 131, 137, 139, 143, 149, 151, 157, 163, 167, 169, 173, 179, 181, 187, 191, 193, 197, 199, 209, 211, 221, 223, 227, 229, 233, 239
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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a(n+4) = 2 * floor((3 * floor((10 * floor((9 * floor((56 * floor((55 * floor((54 * floor((53 * floor((52 * floor((51 * floor((50 * floor((49 * n + 1) / 48) + 13) / 49) + 20) / 50) + 24) / 51) + 31) / 52) + 35) / 53) + 42) / 54) + 54) / 55) + 1) / 8) + 8) / 9) + 1) / 2) + 1 for n>=1; see (22) in Diab link. - Michel Marcus, Dec 14 2020
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MATHEMATICA
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Join[{2, 3, 5, 7}, Select[Table[n, {n, 2, 500}], Mod[#, 2]!=0&&Mod[#, 3]!=0&&Mod[#, 5]!=0&&Mod[#, 7]!=0&]] (* Vladimir Joseph Stephan Orlovsky, Feb 18 2011 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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