2939300

Appears in sequences

• a(n) = (n-1)^2*binomial(2n,n)/(2*(n+1)).at n=10A145885
• Expansion of -(1 - 8*x) / sqrt(1 - 4*x).at n=12A349846
• Pentagonal numbers that are products of smaller pentagonal numbers.at n=11A374372