21597

Appears in sequences

• Number of partitions satisfying 0 < cn(0,5) + cn(1,5) + cn(2,5) + cn(3,5) and 0 < cn(0,5) + cn(4,5) + cn(2,5) + cn(3,5).at n=37A039903
• Number of dissectable polyhedra with n tetrahedral cells and symmetry of type B.at n=15A047775
• a(n) = A077700(n+1)/A077700(n).at n=15A077701
• a(n) = A108466(A025487).at n=43A108467
• a(n) is the sum over all proper integer partitions of n of the previous terms.at n=10A214948
• Number of 3 X n 0..1 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.at n=13A223839
• Number of Motzkin n-paths with two kinds of level steps both of which are final steps.at n=14A253918
• G.f.: Sum_{n>=0} (n+1)*(n+2)/2 * (x + x^n)^n.at n=37A325998