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A080492 a(1) =7, a(n) = smallest multiple of a(n-1) (not equal to 10*a(n-1)) obtained by inserting digits anywhere in a(n-1). 8

%I #6 Dec 05 2013 19:56:00

%S 7,77,1771,177100,17710000,1771000000,177100000000,17710000000000,

%T 1771000000000000,177100000000000000,17710000000000000000,

%U 1771000000000000000000,177100000000000000000000

%N a(1) =7, 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, A080489, A080490, A080491, A080493, A080494.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, Mar 18 2003

%E More terms from _Ray Chandler_, Oct 11 2003

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Last modified April 25 10:51 EDT 2024. Contains 371967 sequences. (Running on oeis4.)