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 A057933 Floor[(80/81)*10^n]. 1
 9, 98, 987, 9876, 98765, 987654, 9876543, 98765432, 987654320, 9876543209, 98765432098, 987654320987, 9876543209876, 98765432098765, 987654320987654, 9876543209876543, 98765432098765432, 987654320987654320 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA G.f.:(9x+8x^2+7x^3+6x^4+5x^5+4x^6+3x^7+2x^8)/((1-10x)(1-x^9)). a(n)=10*a(n-1)-(n%9)+10*(n%9!=0). MATHEMATICA Floor[80/81*10^Range[20]] (* Harvey P. Dale, May 28 2017 *) PROG (PARI) a(n)=10^n*80\81 CROSSREFS Cf. A057932. Sequence in context: A076758 A085868 A147637 * A064617 A225608 A220490 Adjacent sequences:  A057930 A057931 A057932 * A057934 A057935 A057936 KEYWORD nonn AUTHOR Henry Bottomley, Oct 04 2000 STATUS approved

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Last modified July 17 23:21 EDT 2019. Contains 325109 sequences. (Running on oeis4.)