112998domain: NAppears in sequencesMcKay-Thompson series of class 24A for Monster.at n=37A058571a(n) = a(n-1)*a(n-2) - a(n-3) with a(0) = a(1) = a(2) = 3.at n=7A061021Markoff numbers (A002559) multiplied by 3.at n=25A086326