8662720domain: NAppears in sequencesNumber of ways of writing n as a sum of 24 squares.at n=6A000156Theta series of D_24 lattice.at n=3A022055Expansion of theta_4(q)^24 in powers of q = exp(Pi i t).at n=6A319309a(n) = (4/45)*n*(n - 2)*(n - 1)*(n^3 - 12*n^2 + 47*n - 15).at n=24A319577