3834669566

Appears in sequences

• From generalized Catalan numbers.at n=12A006631
• Central terms of the triangle in A208101.at n=21A208983
• a(n) = A128899(2*n, n) = 2*binomial(4*n - 1, 3*n) for n >= 1 and a(0) = 1.at n=11A359108