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a(n) is the least positive integer in base 10 containing n twos that is divisible by n.
1

%I #4 Mar 31 2012 14:11:25

%S 2,22,222,22212,222220,222222,21222222,222222224,222222222,

%T 22222222220,222222222222,2222222222220,22222122222222,

%U 222122222222222,2222222222222220,22222222222222224,222202222222222222

%N a(n) is the least positive integer in base 10 containing n twos that is divisible by n.

%F a(n) = n*A112894(n).

%e a(4) = 22212 because 22212 contains 4 twos and is divisible by 4.

%Y Cf. A112889-A112898, A112900-A112905, A112907-A112910.

%K base,nonn

%O 1,1

%A _Ray G. Opao_, Oct 05 2005

%E Extended by _Ray Chandler_, Oct 09 2005