%I #6 Mar 07 2020 01:36:09
%S 1,4,2304,584325558976905216,
%T 35313389841821364727572472840336561596134691007780285818034354666813122266941990584103364198400
%N Main diagonal of square array defined in A047675.
%K nonn
%O 0,2
%A _N. J. A. Sloane_