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A074579
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6^n + 8^n + 9^n.
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2
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3, 23, 181, 1457, 11953, 99593, 840241, 7160057, 61503553, 531715913, 4620992401, 40333791257, 353325795553, 3104682336233, 27353203130161, 241545689168057, 2137316275469953, 18945908172796553, 168210593763149521
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refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..300
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FORMULA
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G.f.: 1/(1-6*x)+1/(1-8*x)+1/(1-9*x). E.g.f.: e^(6*x)+e^(8*x)+e^(9*x). [From Mohammad K. Azarian, Dec 26 2008]
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MATHEMATICA
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Table[6^n + 8^n + 9^n, {n, 0, 20}]
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PROG
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(MAGMA) [6^n + 8^n + 9^n: n in [0..20]]; // Vincenzo Librandi, May 20 2011
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CROSSREFS
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Cf. A001550, A001576, A034513, A001579, A074501 - A074580.
Sequence in context: A110065 A002816 A144479 * A060880 A093155 A096649
Adjacent sequences: A074576 A074577 A074578 * A074580 A074581 A074582
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KEYWORD
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easy,nonn
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AUTHOR
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Robert G. Wilson v, Aug 23 2002
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STATUS
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approved
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