39070080

Appears in sequences

• a(n) = (3n+3)!/(2n+3)!.at n=7A001763
• A simple context-free grammar in a labeled universe: labeled version of A049140.at n=8A052740
• Product of 6 consecutive integers.at n=21A053625
• Write the natural numbers in groups: 1; 2,3; 4,5,6; 7,8,9,10; ... and multiply the members of each group.at n=5A057003
• Triangle a(n,k) read by rows n which contain columns k=1,2,..,n, where each entry is the product of numbers (k-1)*n-T(k-2)+1 through k*n-T(k-1).at n=30A093447
• The r-th term of the n-th row of the following triangle contains product of r successive numbers in decreasing order beginning from T(n)-T(r-1) where T(n) is the n-th triangular number. 1 3 2 6 20 6 10 72 210 24 15 182 1320 3024 120 ... Sequence contains the triangle by rows.at n=33A110768
• a(n) = Product_{k=0..n-1} (3*n+k-2).at n=6A384262