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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
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
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved

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