296520domain: NAppears in sequencesTheta series of 10-dimensional 2-modular lattice of minimal norm 2.at n=19A029545Number of points in the standard root system version of the D_4 lattice having L_infinity norm n.at n=21A117216a(n) = Sum_{k=0..n} n^k * binomial(2*n,n-k).at n=6A371825