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A066557 Largest n-digit multiple of n. 4

%I #7 Jan 03 2016 16:57:21

%S 9,98,999,9996,99995,999996,9999997,99999992,999999999,9999999990,

%T 99999999990,999999999996,9999999999990,99999999999998,

%U 999999999999990,9999999999999984,99999999999999990,999999999999999990,9999999999999999990,99999999999999999980

%N Largest n-digit multiple of n.

%H Harry J. Smith, <a href="/A066557/b066557.txt">Table of n, a(n) for n = 1..150</a>

%F a(n) = floor((10^n-1)/n)*n.

%o (PARI) { for (n=1, 150, write("b066557.txt", n, " ", floor((10^n - 1)/n)*n) ) } \\ _Harry J. Smith_, Feb 22 2010

%Y Cf. A053041, A066558.

%K nonn,base

%O 1,1

%A _Amarnath Murthy_, Dec 17 2001

%E More terms and formula from Francisco Salinas (franciscodesalinas(AT)hotmail.com), Dec 24 2001

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)