2516800

Appears in sequences

• a(n) = binomial(n+3,n)*binomial(n+7,n).at n=9A105250
• Apply partial sum operator twice to A000594.at n=15A144249
• Double q-form product triangle:q=3;c(n,q)=Product[(1 - q^i)*(1 - q^(i - 1)), {i, 2, n}];t(n,m,q)=c(n,q)/(c(m,q)*c(n-m,q)).at n=17A173885
• Double q-form product triangle:q=3;c(n,q)=Product[(1 - q^i)*(1 - q^(i - 1)), {i, 2, n}];t(n,m,q)=c(n,q)/(c(m,q)*c(n-m,q)).at n=18A173885