3922512

Appears in sequences

• Number of closed meander systems of order n+1 with n components.at n=10A006659
• a(n) = (3n + 2)*binomial(3n + 1,n).at n=7A144485
• Number of preferential arrangements of n labeled elements such that the minimal number of elements per rank equals 10.at n=14A245863
• Triangle read by rows: T(n, m) = (n+1-m)*C(2*n+2-m, m)*C(3*n-3*m+2, n-m+1)/(2*n-m+2).at n=37A360546