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a(1) = 3, a(n)= smallest n-th power obtained by inserting digits anywhere in a(n-1).
4

%I #9 Jan 03 2022 21:14:01

%S 3,36,32768,20632736881,2096638274713626813358181376,

%T 2095266319949834829710838437415365780027681350359080101817236461769

%N a(1) = 3, a(n)= smallest n-th power obtained by inserting digits anywhere in a(n-1).

%C Next term is > 3*10^43. - _David Wasserman_, May 14 2004

%Y Cf. A080804, A080805, A080806, A080808, A080809, A080810, A080811, A080812.

%K base,more,nonn

%O 1,1

%A _Amarnath Murthy_, Mar 22 2003

%E One more term from _Sean A. Irvine_, Sep 01 2009