%I
%S 1,100,1000,5400,10000,54000,100000,540000,1000000,1306449,1728243,
%T 5400000,10000000,50086125,54000000,100000000,130644900,172824300,
%U 540000000,1000000000,1044000721,1306449000,1728243000,5008612500
%N Powerful(1) numbers (A001694) whose digit reversal is a triangular number.
%H <a href="/index/Pow#powerful">Index entries for sequences related to powerful numbers</a>
%e 5400=2^3*3^3*5^2 is powerful and 45=T(9).
%Y Cf. A001694, A115692.
%K nonn,base
%O 1,2
%A _Giovanni Resta_, Jan 31 2006
%E a(14)a(24) from _Donovan Johnson_, Oct 01 2009
