128765

Appears in sequences

• Number of connected (3,n)-hypergraphs (without empty edges and without multiple edges).at n=7A114932
• Triangle T(n,r), read by rows, where the r-th column is expansion of A(x)^r, with A(x) = x * (x+1) * (2*x^4+4*x^3-2*x+1) * (x^4+2*x^3-x+1) / (x^2+x-1)^6.at n=46A187055
• a(n) = binomial(n,3) + 6*binomial(n,4) + 15*binomial(n,5) + 15*binomial(n,6).at n=15A382081