-5777672domain: ZAppears in sequencesMcKay-Thompson series of class 3B for the Monster group.at n=21A007244McKay-Thompson series of class 3B for the Monster group with a(0) = -12.at n=21A030182McKay-Thompson series of class 3B for the Monster group with a(0) = -3.at n=21A045481q-expansion of modular form t_{3B}.at n=21A198955