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 A336122 #9 Jul 17 2020 22:57:59
%S A336122 5,7,9,10,14,18,20,28,36,40,56,72,80,112,144,160,224,288,320,448,576,
%T A336122 640,896,1152,1280,1792,2304,2560,3584,4608,5120,7168,9216,10240,
%U A336122 14336,18432,20480,28672,36864,40960,57344,73728,81920,114688,147456,163840,229376,294912,327680,458752,589824,655360,917504,1179648,1310720
%N A336122 Numbers k for which A335884(k) = 2.
%C A336122 Numbers n such that when we start from k = n, and apply in any combination the nondeterministic maps k -> k - k/p and k -> k + k/p, (where p can be any of the odd prime factors of k), a power of 2 will appear no later than after two such steps, and on some of the combinations a power of 2 will appear after exactly two steps.
%o A336122 (PARI)
%o A336122 A335884(n) = { my(f=factor(n)); sum(k=1,#f~,if(2==f[k,1],0,f[k,2]*(1+max(A335884(f[k,1]-1),A335884(f[k,1]+1))))); };
%o A336122 isA336122(n) = (2==A335884(n));
%Y A336122 Cf. A335884.
%Y A336122 Cf. also A334102, A335882, A335912.
%K A336122 nonn
%O A336122 1,1
%A A336122 _Antti Karttunen_, Jul 09 2020