This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A386248 #5 Jul 19 2025 18:14:49
%S A386248 1,2,4,8,3,16,32,6,64,128,12,256,512,24,3,1024,2048,48,4096,8192,96,
%T A386248 16384,32768,192,6,65536,131072,384,262144,524288,768,1048576,2097152,
%U A386248 1536,12,4194304,3,8388608,3072,3,16777216,33554432,6144,67108864,134217728
%N A386248 a(n) is the unique integer k such that A161792(n) = k^A000120(A161792(n)).
%e A386248 For n = 11: A161792(11) = 144 = 12^2 = 12^A000120(144), so a(11) = 12.
%o A386248 (PARI) { for (n = 1, 2^27, if (ispower(n, hammingweight(n), &r), print1 (r", "););); }
%Y A386248 Cf. A000120, A113315, A161792, A386249.
%K A386248 nonn,base
%O A386248 1,2
%A A386248 _Rémy Sigrist_, Jul 16 2025