38655domain: NAppears in sequences"DFK" (bracelet, size, unlabeled) transform of 1,3,5,7...at n=16A032217Numbers whose base-14 representation has exactly 5 runs.at n=27A043666a(n) = Sum_{k=1..n} (-1)^(k+1) * floor((n/k)^3).at n=34A350222