1048610domain: NAppears in sequencesa(n) = Sum_{k=1..n} (n/gcd(k,n))^(n/gcd(k,n) - 2).at n=7A342411a(n) = Sum_{k=1..n} gcd(k,n)^(n/gcd(k,n) - 1).at n=33A342437Shortest distance from curve start to end along the segments of dragon curve expansion level n, and which is the diameter of the curve as a graph.at n=37A343949