254831667domain: NAppears in sequencesCrystal ball sequence for 9-dimensional cubic lattice.at n=17A008419a(n) = n*(2*n^8 + 84*n^6 + 798*n^4 + 1636*n^2 + 315)/2835.at n=19A099196Crystal ball sequence for the lattice C_9.at n=9A305723