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%I #2 Mar 30 2012 17:40:35
%S 5,29,53,541,673,2239,5273,6257,7753,10567,10861,10883,15137,27793,
%T 28447,28723,29201,52639,54001,56041,59863,62143,67189,67349,74587,
%U 76771,103591,103811,104971,108643,157637,212161,217223,229343,241391
%N Primes whose digit reversal is a pentagonal number (A000326).
%e 541 is prime and 145 is the 10th pentagonal number.
%Y Cf. A000326, A115707.
%K nonn,base
%O 1,1
%A _Giovanni Resta_, Jan 31 2006
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