864008

Appears in sequences

• Number of points of L1 norm 5 in cubic lattice Z^n.at n=20A035599
• Coordination sequence for lattice D*_20 (with edges defined by l_1 norm = 1).at n=5A035609
• Coordination sequence for 20-dimensional cubic lattice.at n=5A035715
• Number of nodes in virtual, "optimal", chordal graphs of diameter 5, degree =n+1.at n=37A067969
• a(n) = Sum_{k=0..n} binomial(4*n,k) * binomial(5*n-k-1,n-k).at n=5A370102