1472328

Appears in sequences

• a(n) = (2*n)!^2 / ((n+1)!*n!^3).at n=7A000888
• Duplicate of A000888.at n=7A151392
• Expansion of 2F1( 1/2, 3/2; 4; 16*x ).at n=7A186266
• Numbers with prime factorization p^2*q^2*r^2*s^3 where p, q, r, and s are distinct primes.at n=25A190382
• a(n) = n^2*(n^2 - 1)^2/2.at n=11A288959
• a(n) = A003415(A324886(n)).at n=62A329047
• Triangle read by rows: T(n, k) = binomial(2*k, k) * binomial(2*n, n) / (n + 1).at n=35A379100