1,2

Chai Wah Wu, Table of n, a(n) for n = 1..100

a(n) = A244859(n)/n.

For n = 7, 15873*7 = 111111 and this is the least positive multiple of 7 that is either a repunit or of the form 1111...000.

Cf. A244859, A079339, A004290. Equal to A079339 for the first 6 terms.

Sequence in context: A157809 A079339 A257343 * A043075 A106129 A096673

Adjacent sequences: A244924 A244925 A244926 * A244928 A244929 A244930

nonn,base

Chai Wah Wu, Jul 08 2014

approved