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a(1) = 9, a(n)= smallest n-th power obtained by inserting digits anywhere in a(n-1).
5

%I #9 Jan 03 2022 21:14:10

%S 9,49,4096,3748096,4932784804069376,

%T 44934932784038660743085694310776796224

%N a(1) = 9, a(n)= smallest n-th power obtained by inserting digits anywhere in a(n-1).

%C Essentially the same as A080808.

%Y Cf. A080804 - A080811.

%K base,more,nonn

%O 1,1

%A _Amarnath Murthy_, Mar 22 2003

%E 3 more terms from _Sean A. Irvine_, Sep 06 2009