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A135659
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a(n) = 24*n + 7.
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4
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7, 31, 55, 79, 103, 127, 151, 175, 199, 223, 247, 271, 295, 319, 343, 367, 391, 415, 439, 463, 487, 511, 535, 559, 583, 607, 631, 655, 679, 703, 727, 751, 775, 799, 823, 847, 871, 895, 919, 943, 967, 991, 1015, 1039, 1063, 1087, 1111, 1135, 1159, 1183, 1207
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OFFSET
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0,1
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COMMENTS
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Conjecture: All Mersenne Primes (A000668) > 3 are in this sequence.
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LINKS
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FORMULA
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a(n) = 2*a(n-1) - a(n-2).
G.f.: (7+17*x)/(1-x)^2. (End)
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MATHEMATICA
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Table[24n + 7, {n, 0, 100}]
LinearRecurrence[{2, -1}, {7, 31}, 60] (* Harvey P. Dale, Jul 14 2013 *)
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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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