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 A198646 a(n) = 11*3^n-1. 2
 10, 32, 98, 296, 890, 2672, 8018, 24056, 72170, 216512, 649538, 1948616, 5845850, 17537552, 52612658, 157837976, 473513930, 1420541792, 4261625378, 12784876136, 38354628410, 115063885232, 345191655698, 1035574967096, 3106724901290 (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 (4,-3). FORMULA a(n) = 3*a(n-1)+2, a(0)=10. G.f.: (10-8*x) / ((3*x-1)*(x-1)). - R. J. Mathar, Oct 30 2011 a(n) = 4*a(n-1)-3*a(n-2). - Wesley Ivan Hurt, Oct 02 2021 a(n) = 2*A052909(n+1). - R. J. Mathar, Apr 07 2022 MATHEMATICA 11*3^Range[0, 30] - 1 (* Wesley Ivan Hurt, Oct 02 2021 *) PROG (Magma) [11*3^n-1: n in [0..30]] CROSSREFS Cf. A027107, A048473, A171498. Sequence in context: A229720 A350108 A024933 * A356277 A052210 A084818 Adjacent sequences: A198643 A198644 A198645 * A198647 A198648 A198649 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Oct 28 2011 STATUS approved

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Last modified March 31 09:37 EDT 2023. Contains 361646 sequences. (Running on oeis4.)