147168
domain: N
Appears in sequences
- a(0) = 1; for n>0, a(n) = 16 times sum of cubes of divisors of n.at n=20A092820
- Number T(n,k) of endofunctions on [n] such that the minimal cardinality of the nonempty preimages equals k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=48A245687
- Numbers m such that b^sigma(m) == b^phi(m) == b^numdiv(m) == b^m (mod m) for every integer b.at n=42A277173