5986993

Properties

Appears in sequences

• Sum of the lengths of the second ascents in all Dyck paths of semilength n+2.at n=12A114277
• a(0) = 1 and a(n) = Sum_{k = 0..3*n} n/(n + 2*k)*binomial(n + 2*k,k) for n >= 1.at n=4A352276
• Prime numbersat n=412029