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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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history;
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OFFSET
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1,1
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COMMENTS
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Conjecture: All Mersenne Primes A000668 with only one exception number 3 are subset of this sequence
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LINKS
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Table of n, a(n) for n=1..51.
Index to sequences with linear recurrences with constant coefficients, signature (2,-1).
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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. [Colin Barker, Apr 02 2012]
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MATHEMATICA
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Table[24n + 7, {n, 0, 100}]
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CROSSREFS
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Cf. A107006, A124477, A135657, A135982.
Sequence in context: A000921 A185004 A172490 * A031388 A163354 A105428
Adjacent sequences: A135656 A135657 A135658 * A135660 A135661 A135662
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KEYWORD
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nonn,easy
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AUTHOR
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Artur Jasinski, Nov 25 2007
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STATUS
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approved
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