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%I #9 Jul 24 2015 03:34:31
%S 24,300,30222192,4838419019
%N First 4-fold intrinsically n-palindrome (given in base ten).
%C Given the size of the first 3-fold 6-palindrome (13 base-ten digits; see A171705 or A171741), a fifth term is going to be difficult.
%e a(2)=24 is 11 in base 23, 22 in base 11, 33 in base 7 and 44 in base 5.
%e a(3)=300 is 1A1 in base 13, 363 in base 9, 454 in base 8 and 606 in base 7.
%Y Cf. A171701, A171702, A171703, A171704, A171705, A171706, A171740, A171741.
%K more,hard,nonn,base
%O 2,1
%A _James G. Merickel_, Dec 17 2009
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