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A189742
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a(1)=4, a(2)=3, a(n) = 4*a(n-1) + 3*a(n-2).
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13
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4, 3, 24, 105, 492, 2283, 10608, 49281, 228948, 1063635, 4941384, 22956441, 106649916, 495468987, 2301825696, 10693709745, 49680316068, 230802393507, 1072250522232, 4981409269449, 23142388644492, 107513782386315, 499482295478736, 2320470529073889
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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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MATHEMATICA
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LinearRecurrence[{4, 3}, {4, 3}, 40]
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PROG
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(Maxima) a[1]:4$ a[2]:3$ a[n]:=4*a[n-1]+3*a[n-2]$ makelist(a[n], n, 1, 24); /* Bruno Berselli, May 24 2011 */
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CROSSREFS
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Cf. A000045, A000079, A105476, A159612, A080040, A135522, A103435, A189732, A189734, A189735, A189736, A189737, A189738, A189739, A189741, A189743, A189744, A189745, A189746, A189747, A189748, A189749.
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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