%I #13 Nov 23 2014 03:07:51
%S 1390,3055334,28638619086007684802380,296356838660564717696928980,
%T 296450546123962656267474730
%N Numbers whose squares remain squares when prepended with 4 and appended with 25 in base 10.
%C a(6) >= 10^50.  _Hiroaki Yamanouchi_, Nov 22 2014
%e 1390^2 = 1932100, 4193210025 = 64755^2.
%Y Cf. A249968, A249969, A249971.
%K nonn,base,more
%O 1,1
%A _Chai Wah Wu_, Nov 18 2014
