%I #8 Jun 16 2022 21:18:02
%S 4,8,9,16,25,27,36,49,125,128,169,256,289,1369,13456,13689,134689
%N Perfect powers whose digits are in strictly increasing order.
%C I.e., numbers of the form b^k with b > 1 and k > 1 in whose base-10 expansion each digit is greater than the previous digit.
%Y Cf. A001597, A009993, A355062.
%K nonn,base,fini,full
%O 1,1
%A _Jon E. Schoenfield_, Jun 16 2022