83620
domain: N
Appears in sequences
- Fibonacci sequence beginning 0, 20.at n=19A022354
- Trajectory of 1 under map n->19n+1 if n odd, n->n/2 if n even.at n=31A033966
- Trajectory of 3 under map n->19n+1 if n odd, n->n/2 if n even.at n=22A037107
- a(n) = (n+1)*F(n), F(n) = Fibonacci numbers A000045.at n=19A099920
- a(n) = sigma(n)*Fibonacci(n), where sigma(n) = A000203(n), the sum of divisors of n.at n=18A203848
- Number of triangles in a Star of David of size n.at n=20A299965