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%I #7 Jun 25 2017 08:34:07
%S 1023456789,10012233445566778899,100011222333444555666777888999,
%T 1000011122223333444455556666777788889999,
%U 10000011112222233333444445555566666777778888899999,100000011111222222333333444444555555666666777777888888999999
%N Least number having in its decimal representation each digit n times.
%H Alois P. Heinz, <a href="/A217535/b217535.txt">Table of n, a(n) for n = 1..100</a>
%F a(n) ~ 10^(10n-1). See PARI code for an exact formula.
%p a:= n-> parse(cat(1,0$n,1$(n-1),seq(i$n, i=2..9))):
%p seq(a(n), n=1..10); # _Alois P. Heinz_, Jun 25 2017
%o (PARI) A217535(n)=sum(d=1,9,10^(n-(d==1))\9*d*10^(n*(9-d)))+10^(10*n-1)
%Y Cf. A050278, A051018, A049363, A074205, A154566, A204047, A020666, A020667, A061604, A180489.
%Y A subsequence of A171102.
%K nonn,base,easy
%O 1,1
%A _M. F. Hasler_, Oct 05 2012
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