A080489 - OEIS

A080489

a(1) =4, a(n) = smallest multiple of a(n-1) (not equal to 10*a(n-1)) obtained by inserting digits anywhere in a(n-1).

%I #5 Dec 05 2013 19:56:00

%S 4,24,264,20064,2006400,200640000,20064000000,2006400000000,

%T 200640000000000,20064000000000000,2006400000000000000,

%U 200640000000000000000,20064000000000000000000

%N a(1) =4, a(n) = smallest multiple of a(n-1) (not equal to 10*a(n-1)) obtained by inserting digits anywhere in a(n-1).

%Y Cf. A080486, A080487, A080488, A080490, A080491, A080492, A080493, A080494.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, Mar 18 2003

%E More terms from _Ray Chandler_, Oct 11 2003