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%I #9 Jun 15 2022 13:36:59
%S 4,8,16,32,36,64,100,128,196,216,256,324,484,512,676,900,1000,1024,
%T 1156,1296,1444,1764,2048,2116,2500,2744,2916,3364,3844,4096,4356,
%U 4900,5476,5832,6084,6724,7396,7776,8100,8192,8836,9604,10000,10404,10648,11236,12100
%N Perfect powers j^k, such that k is the exponent of 2 in the factorization of j^k.
%F a(n) = 4 * A354956(n).
%o (PARI) for(k=1,15000,my(i=ispower(k));if(i&&valuation(k,2)==i,print1(k,", ")))
%Y Cf. A000079, A001597, A354956.
%K nonn
%O 1,1
%A _Hugo Pfoertner_, Jun 13 2022
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