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A008604
Multiples of 22.
9
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
Tanya Khovanova, Recursive Sequences
Luis Manuel Rivera, Integer sequences and k-commuting permutations, arXiv preprint arXiv:1406.3081 [math.CO], 2014-2015.
FORMULA
G.f.: 22*x/(x-1)^2. - Vincenzo Librandi, Jun 10 2013
a(n) = A008593(2n). - Daniel Forgues, Feb 22 2016
From Wesley Ivan Hurt, May 19 2024: (Start)
a(n) = 22*n.
a(n) = 2*a(n-1) - a(n-2). (End)
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
KEYWORD
nonn,easy
STATUS
approved