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%I #5 Mar 30 2012 17:40:35
%S 1,100,500,529,1000,1089,2116,5000,6241,10000,50000,52900,100000,
%T 103041,108900,151875,211600,500000,529000,549152,624100,1000000,
%U 1089000,2116000,5000000,5290000,6241000,10000000
%N Powerful(1) numbers (A001694) whose digit reversal is a pentagonal number (A000326).
%H <a href="/index/Pow#powerful">Index entries for sequences related to powerful numbers</a>
%e 529=23^2 is powerful and 925 is the 25th pentagonal number.
%Y Cf. A000326, A001694, A115696.
%K nonn,base
%O 1,2
%A _Giovanni Resta_, Jan 31 2006
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