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%I #4 May 28 2017 10:01:33
%S 9,98,987,9876,98765,987654,9876543,98765432,987654320,9876543209,
%T 98765432098,987654320987,9876543209876,98765432098765,
%U 987654320987654,9876543209876543,98765432098765432,987654320987654320
%N Floor[(80/81)*10^n].
%F G.f.:(9x+8x^2+7x^3+6x^4+5x^5+4x^6+3x^7+2x^8)/((1-10x)(1-x^9)).
%F a(n)=10*a(n-1)-(n%9)+10*(n%9!=0).
%t Floor[80/81*10^Range[20]] (* _Harvey P. Dale_, May 28 2017 *)
%o (PARI) a(n)=10^n*80\81
%Y Cf. A057932.
%K nonn
%O 1,1
%A _Henry Bottomley_, Oct 04 2000
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