1969110

Appears in sequences

• a(n) = binomial(2*n+1,n)*(n+1)^2.at n=8A002544
• a(n) = C(n+2,2)*C(n,floor(n/2)).at n=16A107231
• a(n) is the smallest n-gonal number divisible by exactly n n-gonal numbers.at n=7A358859