64897domain: NAppears in sequencesCentered octahedral numbers (crystal ball sequence for cubic lattice).at n=36A001845Products p*q*r of three distinct primes such that s=(p*q) mod r, t=(p*r) mod q and u=(q*r) mod p, and s+t+u are all prime.at n=11A338705E.g.f. satisfies log(A(x)) = x * (exp(x) - 1) * A(x)^2.at n=7A356797