2147483772domain: NAppears in sequencesa(n) = Sum_{d|n} d*2^(n/d)*tau(d).at n=30A174478Smallest multiple of n such that, when expressed in binary, in the string of bits the binary representation of n occurs after the n-1 most significant bits.at n=27A245470Number of (not necessarily maximal) cliques in the n-sun graph.at n=30A295904