133019domain: NAppears in sequencesNumber of points of norm <= n in the body-centered cubic lattice with the lattice parameter equal to 2/sqrt(3).at n=29A276648a(n) = a(n-2) + a(n-3) + a(n-4) with a(0) = 0, a(1) = a(2) = 1, a(3) = 0.at n=34A277252