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A284924 a(n) is the least n-digit multiple of 5^n using the decimal digits {5, 6, 7, 8, 9} exclusively. 1

%I

%S 5,75,875,6875,96875,796875,6796875,66796875,966796875,5966796875,

%T 65966796875,865966796875,8865966796875,68865966796875,

%U 868865966796875,8868865966796875,78868865966796875,578868865966796875,7578868865966796875,87578868865966796875

%N a(n) is the least n-digit multiple of 5^n using the decimal digits {5, 6, 7, 8, 9} exclusively.

%H Alois P. Heinz, <a href="/A284924/b284924.txt">Table of n, a(n) for n = 1..1000</a>

%e a(2) = 75 because 75 is divisible by 5^2 (25*3=75) and uses only digits in the 5-9 interval.

%Y Cf. A140288, A035014, A053312.

%K nonn,base

%O 1,1

%A _J. Lowell_, Apr 05 2017

%E More terms from _Alois P. Heinz_, Apr 06 2017

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Last modified August 7 23:50 EDT 2022. Contains 355995 sequences. (Running on oeis4.)