98928domain: NAppears in sequencesNumbers that are the sum of 7 positive 9th powers.at n=31A003396Number of 3 X 3 semimagic squares with distinct positive values and magic sum n.at n=24A173547Numbers n such that 8^n + 7^(n+1) is prime.at n=7A274215Theta series of the 24-dimensional lattice of hyper-roots E_9(SU(3)).at n=4A288779