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 A074616 a(n) = 5^n + 7^n. 8
 2, 12, 74, 468, 3026, 19932, 133274, 901668, 6155426, 42306732, 292240874, 2026154868, 14085427826, 98109713532, 684326588474, 4778079088068, 33385518460226, 233393453440332, 1632228295176074, 11417968671701268 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Index entries for linear recurrences with constant coefficients, signature (12,-35). FORMULA From Mohammad K. Azarian, Jan 11 2009: (Start) G.f.: 1/(1-5*x) + 1/(1-7*x). E.g.f.: e^(5*x) + e^(7*x). (End) a(n) = 12*a(n-1) - 35*a(n-2) with a(0)=2, a(1)=12. - Vincenzo Librandi, Jul 21 2010 MATHEMATICA Table[5^n + 7^n, {n, 0, 20}] CROSSREFS Cf. A000051, A034472, A052539, A034474, A062394, A034491, A062395, A062396, A007689, A063376, A063481, A074600..A074624. Sequence in context: A020004 A078469 A014351 * A006936 A052875 A037725 Adjacent sequences:  A074613 A074614 A074615 * A074617 A074618 A074619 KEYWORD easy,nonn AUTHOR Robert G. Wilson v, Aug 26 2002 STATUS approved

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Last modified October 19 16:17 EDT 2019. Contains 328223 sequences. (Running on oeis4.)