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 A199311 8*5^n+1. 1
 9, 41, 201, 1001, 5001, 25001, 125001, 625001, 3125001, 15625001, 78125001, 390625001, 1953125001, 9765625001, 48828125001, 244140625001, 1220703125001, 6103515625001, 30517578125001, 152587890625001, 762939453125001 (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 (6,-5). FORMULA a(n) = 5*a(n-1)-4. a(n) = 6*a(n-1)-5*a(n-2). G.f.: (9-13*x)/((1-x)*(1-5*x)). MATHEMATICA 8*5^Range[0, 30]+1 (* or *) LinearRecurrence[{6, -5}, {9, 41}, 30] (* Harvey P. Dale, Feb 20 2015 *) PROG (Magma) [8*5^n+1: n in [0..30]]; CROSSREFS Sequence in context: A083584 A276780 A183916 * A146239 A083085 A147283 Adjacent sequences: A199308 A199309 A199310 * A199312 A199313 A199314 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Nov 05 2011 STATUS approved

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Last modified January 29 06:03 EST 2023. Contains 359915 sequences. (Running on oeis4.)