772200

Appears in sequences

• a(n) = 4*(n+1)*binomial(n+2,8).at n=8A027781
• a(n) = 9*(n+1)*binomial(n+2,9)/2.at n=7A027782
• a(n) = binomial(2n+1, n+1)*binomial(n+3, 3).at n=7A085374
• Square of Narayana triangle A001263: View A001263 as a lower triangular matrix. Then the square of that matrix is also lower triangular. Sequence gives this lower triangle, read by rows.at n=47A095801
• a(n) = binomial(n+3,n)*binomial(n+8,n).at n=7A104671
• a(n) = binomial(n+7,7)*binomial(n+12,7).at n=3A104680
• a(n) = binomial(4+2*n, n) * binomial(9+2*n, 4+n).at n=3A113857
• a(n) = binomial(2*n,n) * (2*n+1)^2.at n=7A294486