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 A074558 a(n) = 3^n + 7^n + 8^n. 1
 3, 18, 122, 882, 6578, 49818, 380522, 2922882, 22548578, 174591018, 1356276122, 10567438482, 82561295378, 646646418618, 5076274366922, 39931947947682, 314707950326978, 2484430456812618, 19642812494812922, 155514084423490482 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..1000 Index entries for linear recurrences with constant coefficients, signature (18,-101,168). FORMULA From Mohammad K. Azarian, Dec 30 2008: (Start) G.f.: 1/(1-3*x) + 1/(1-7*x) + 1/(1-8*x). E.g.f.: exp(3*x) + exp(7*x) + exp(8*x). (End) MATHEMATICA Table[3^n + 7^n + 8^n, {n, 0, 20}] PROG (MAGMA) [3^n + 7^n + 8^n: n in [0..20]]; // Vincenzo Librandi, Aug 24 2011 CROSSREFS Cf. A001550, A001576, A034513, A001579, A074501 - A074580. Sequence in context: A295537 A183145 A127188 * A074564 A108241 A199421 Adjacent sequences:  A074555 A074556 A074557 * A074559 A074560 A074561 KEYWORD easy,nonn AUTHOR Robert G. Wilson v, Aug 23 2002 STATUS approved

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Last modified March 29 18:37 EDT 2020. Contains 333117 sequences. (Running on oeis4.)