214451

Properties

Appears in sequences

• Primes p such that p, p+6, p+12, p+18 are consecutive primes and p=6*k+5 for some k.at n=31A090834
• Number of (unlabeled) rooted trees with n leaf nodes and without unary nodes or outdegrees larger than six.at n=14A292212
• a(n) is the total number of paths starting at (0, 0), ending at (n, 0), consisting of steps (1, 1), (1, 0), (1, -3), and staying on or above y = -1.at n=16A379463
• Prime numbersat n=19164