A008604 Multiples of 22.

0, 22, 44, 66, 88, 110, 132, 154, 176, 198, 220, 242, 264, 286, 308, 330, 352, 374, 396, 418, 440, 462, 484, 506, 528, 550, 572, 594, 616, 638, 660, 682, 704, 726, 748, 770, 792, 814, 836, 858, 880, 902, 924, 946, 968, 990

Offset

0,2

Comments

Even numbers for which the sum of "digits" base 100 is divisible by 11. - Daniel Forgues, Feb 22 2016

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Tanya Khovanova, Recursive Sequences

INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 334

Luis Manuel Rivera, Integer sequences and k-commuting permutations, arXiv preprint arXiv:1406.3081 [math.CO], 2014-2015.

Index entries for linear recurrences with constant coefficients, signature (2, -1).

Formula

G.f.: 22*x/(x-1)^2. - Vincenzo Librandi, Jun 10 2013

a(n) = A008593(2n). - Daniel Forgues, Feb 22 2016

Mathematica

Range[0, 1500, 22] (* Vladimir Joseph Stephan Orlovsky, Jun 01 2011 *)
CoefficientList[Series[22 x / (x - 1)^2, {x, 0, 60}], x] (* Vincenzo Librandi, Jun 10 2013 *)
LinearRecurrence[{2, -1}, {0, 22}, 50] (* Harvey P. Dale, Aug 06 2018 *)

Prog

(PARI) a(n)=22*n \\ Charles R Greathouse IV, Oct 07 2015

Crossrefs

Cf. A008602, A008603.

Sequence in context: A040462 A269310 A015799 * A110724 A277051 A308125

Adjacent sequences: A008601 A008602 A008603 * A008605 A008606 A008607

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved