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%I #10 Aug 06 2024 22:18:37
%S 1,16,196,0,10816,132496,3013696,10010896,0,1021697296,32747969296,
%T 119013960256,3495164855296,60207636572164,401377463841649,0,
%U 80921770503885441,0,0,0,174389521641325050256,1436097534223509431296
%N Smallest n-digit square whose external digits as well as internal digits form a square, or 0 if no such number exists.
%H Max Alekseyev, <a href="/A077363/b077363.txt">Table of n, a(n) for n = 1..91</a>
%Y Cf. A077355, A077356, A077357, A077364.
%K base,nonn
%O 1,2
%A _Amarnath Murthy_, Nov 05 2002
%E More terms from _Erich Friedman_, Aug 08 2005
%E More terms from _Sean A. Irvine_, Mar 28 2010