12471030

Appears in sequences

• Expansion of (1+6*x)/(1-4*x)^(7/2).at n=8A007744
• Table of generalized de Bruijn's numbers (A006480) read by ascending antidiagonals.at n=29A361027
• Table of generalized de Bruijn's numbers (A006480) read by ascending antidiagonals.at n=35A361027
• a(n) = 2*(3*n)!/(n!*(n+1)!^2).at n=7A361028