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 A008604 Multiples of 22. 9

%I

%S 0,22,44,66,88,110,132,154,176,198,220,242,264,286,308,330,352,374,

%T 396,418,440,462,484,506,528,550,572,594,616,638,660,682,704,726,748,

%U 770,792,814,836,858,880,902,924,946,968,990

%N Multiples of 22.

%C Even numbers for which the sum of "digits" base 100 is divisible by 11. - _Daniel Forgues_, Feb 22 2016

%H Vincenzo Librandi, <a href="/A008604/b008604.txt">Table of n, a(n) for n = 0..1000</a>

%H Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>

%H INRIA Algorithms Project, <a href="http://ecs.inria.fr/services/structure?nbr=334">Encyclopedia of Combinatorial Structures 334</a>

%H Luis Manuel Rivera, <a href="http://arxiv.org/abs/1406.3081">Integer sequences and k-commuting permutations</a>, arXiv preprint arXiv:1406.3081 [math.CO], 2014-2015.

%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2, -1).

%F G.f.: 22*x/(x-1)^2. - _Vincenzo Librandi_, Jun 10 2013

%F a(n) = A008593(2n). - _Daniel Forgues_, Feb 22 2016

%t Range[0, 1500, 22] (* _Vladimir Joseph Stephan Orlovsky_, Jun 01 2011 *)

%t CoefficientList[Series[22 x / (x - 1)^2, {x, 0, 60}], x] (* _Vincenzo Librandi_, Jun 10 2013 *)

%t LinearRecurrence[{2,-1},{0,22},50] (* _Harvey P. Dale_, Aug 06 2018 *)

%o (PARI) a(n)=22*n \\ _Charles R Greathouse IV_, Oct 07 2015

%Y Cf. A008602, A008603.

%K nonn,easy

%O 0,2

%A _N. J. A. Sloane_

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Last modified August 17 17:06 EDT 2019. Contains 326059 sequences. (Running on oeis4.)