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A091691 (10^(n-1)-1) * (n-10) / 9. 0

%I

%S 1,0,-8,-77,-666,-5555,-44444,-333333,-2222222,-11111111,0,1111111111,

%T 22222222222,333333333333,4444444444444,55555555555555,

%U 666666666666666,7777777777777777,88888888888888888,999999999999999999,11111111111111111110,122222222222222222221

%N (10^(n-1)-1) * (n-10) / 9.

%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (22,-141,220,-100).

%F G.f.: ( 1+133*x^2-121*x^3-22*x ) / ( (10*x-1)^2*(x-1)^2 ). - _R. J. Mathar_, Feb 14 2015

%t LinearRecurrence[{22,-141,220,-100},{1,0,-8,-77},30] (* _Harvey P. Dale_, Jun 24 2018 *)

%Y Cf. A091686.

%K easy,sign

%O 0,3

%A _Paul Barry_, Jan 29 2004

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Last modified October 15 16:06 EDT 2021. Contains 348033 sequences. (Running on oeis4.)