Table of n, a(n) for n=1..8.
2357111317 is divisible by 11, and concatenation through 499 is required for divisibility by 11^2.
Cf. A183194, A185656, and following entries.
Sequence in context: A142368 A109305 A130660 * A012792 A012232 A114063
Adjacent sequences: A185656 A185657 A185658 * A185660 A185661 A185662
James G. Merickel, Feb 01 2011