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%I #11 Feb 02 2022 00:08:04
%S 1,1,4,16,81,400,2304,13225,81796,516961,3392964,22714756,155900196,
%T 1087218729,7710771721,55404215161,403030713409,2962388303281,
%U 21983682632976,164512124707984,1240577449436224
%N Squares of numbers of rooted trees.
%H <a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a>
%Y Cf. A000081.
%K nonn
%O 0,3
%A _N. J. A. Sloane_