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 A037506 Base 5 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,0. 0
 1, 7, 35, 176, 882, 4410, 22051, 110257, 551285, 2756426, 13782132, 68910660, 344553301, 1722766507, 8613832535, 43069162676, 215345813382, 1076729066910, 5383645334551, 26918226672757, 134591133363785, 672955666818926 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..22. Index entries for 5-automatic sequences. Index entries for linear recurrences with constant coefficients, signature (5,0,1,-5). FORMULA G.f.: x*(1+2*x) / ( (x-1)*(5*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 27 2015 A007092(a(n)) = A037511(n). MATHEMATICA Table[FromDigits[PadRight[{}, n, {1, 2, 0}], 5], {n, 30}] (* or *) LinearRecurrence[{5, 0, 1, -5}, {1, 7, 35, 176}, 30] (* Harvey P. Dale, Jul 05 2022 *) PROG (PARI) a(n)=([0, 1, 0, 0; 0, 0, 1, 0; 0, 0, 0, 1; -5, 1, 0, 5]^(n-1)*[1; 7; 35; 176])[1, 1] \\ Charles R Greathouse IV, Feb 13 2017 CROSSREFS Sequence in context: A249793 A268990 A005055 * A037689 A051926 A297602 Adjacent sequences: A037503 A037504 A037505 * A037507 A037508 A037509 KEYWORD nonn,base,easy AUTHOR Clark Kimberling STATUS approved

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Last modified June 22 23:34 EDT 2024. Contains 373629 sequences. (Running on oeis4.)