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Least k such that n-th repunit times k is a pandigital.
3

%I #9 Oct 08 2016 16:51:55

%S 1023456789,93125079,9222117,1110789,92115,92115,92115,92115,92115,

%T 92115,92115,92115,92115,92115,92115,92115,92115,92115,92115,92115,

%U 92115,92115,92115,92115,92115,92115,92115,92115,92115,92115,92115,92115,92115,92115,92115

%N Least k such that n-th repunit times k is a pandigital.

%C Starting from n=5, a(n)=A277056(10)=92115, and the corresponding pandigitals are 1023499...989765 (n-5 nines).

%C a(1)-a(5) constitute row 10 of A277055.

%C a(n)*A002275(n) is 1023456789, 1024375869, 1023654987, 1234086579, 1023489765, ...

%e a(2) = 93125079 because A002275(2)*93125079 = 11*93125079 = 1024375869 that is a pandigital and 93125079 is the least number with this property.

%Y Cf. A002275, A171102, A277055, A277056, A277057.

%K nonn,base,easy

%O 1,1

%A _Andrey Zabolotskiy_ and _Altug Alkan_, Sep 26 2016