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A189748
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a(n) = 5*a(n-1) + 4*a(n-2) with a(1)=5, a(2)=4.
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12
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5, 4, 40, 216, 1240, 7064, 40280, 229656, 1309400, 7465624, 42565720, 242691096, 1383718360, 7889356184, 44981654360, 256465696536, 1462255100120, 8337138286744, 47534711834200, 271022112317976, 1545249408926680, 8810335493905304, 50232675105233240
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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[{5, 4}, {5, 4}, 40]
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PROG
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(Maxima) a[1]:5$ a[2]:4$ a[n]:=5*a[n-1]+4*a[n-2]$ makelist(a[n], n, 1, 23); /* 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, A189742, A189743, A189744, A189745, A189746, A189747, 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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