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 A220087 2^n - 27. 4
 -26, -25, -23, -19, -11, 5, 37, 101, 229, 485, 997, 2021, 4069, 8165, 16357, 32741, 65509, 131045, 262117, 524261, 1048549, 2097125, 4194277, 8388581, 16777189, 33554405, 67108837, 134217701, 268435429, 536870885, 1073741797, 2147483621, 4294967269 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Index entries for linear recurrences with constant coefficients, signature (3, -2). FORMULA From Chai Wah Wu, Jan 17 2020: (Start) a(n) = 3*a(n-1) - 2*a(n-2) for n > 1. G.f.: (53*x - 26)/((x - 1)*(2*x - 1)). (End) MATHEMATICA Table[2^n - 27, {n, 0, 40}] (* T. D. Noe, Dec 04 2012 *) LinearRecurrence[{3, -2}, {-26, -25}, 40] (* Harvey P. Dale, May 17 2018 *) CROSSREFS Cf. A000225, A036563, A185346. Sequence in context: A205322 A291470 A093538 * A022982 A023468 A261309 Adjacent sequences:  A220084 A220085 A220086 * A220088 A220089 A220090 KEYWORD sign AUTHOR Andreas Rieber, Dec 04 2012 STATUS approved

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Last modified June 19 07:26 EDT 2021. Contains 345126 sequences. (Running on oeis4.)