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 A074579 a(n) = 6^n + 8^n + 9^n. 2
 3, 23, 181, 1457, 11953, 99593, 840241, 7160057, 61503553, 531715913, 4620992401, 40333791257, 353325795553, 3104682336233, 27353203130161, 241545689168057, 2137316275469953, 18945908172796553, 168210593763149521 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..300 Index entries for linear recurrences with constant coefficients, signature (23,-174,432). FORMULA From Mohammad K. Azarian, Dec 26 2008: (Start) 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). (End) MATHEMATICA Table[6^n + 8^n + 9^n, {n, 0, 20}] LinearRecurrence[{23, -174, 432}, {3, 23, 181}, 30] (* Harvey P. Dale, Sep 20 2016 *) PROG (MAGMA) [6^n + 8^n + 9^n: n in [0..20]]; // Vincenzo Librandi, May 20 2011 CROSSREFS Cf. A001550, A001576, A034513, A001579, A074501-A074580. Sequence in context: A002816 A320265 A144479 * A060880 A093155 A241886 Adjacent sequences:  A074576 A074577 A074578 * A074580 A074581 A074582 KEYWORD easy,nonn AUTHOR Robert G. Wilson v, Aug 23 2002 STATUS approved

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Last modified January 22 04:27 EST 2020. Contains 331133 sequences. (Running on oeis4.)