McKay-Thompson series of class 6C for Monster (and, apart from signs, of class 12A).

Terms

a(0) =1a(1) =0a(2) =15a(3) =-32a(4) =87a(5) =-192a(6) =343a(7) =-672a(8) =1290a(9) =-2176a(10) =3705a(11) =-6336a(12) =10214a(13) =-16320a(14) =25905a(15) =-39936a(16) =61227a(17) =-92928a(18) =138160a(19) =-204576a(20) =300756a(21) =-435328a(22) =626727a(23) =-897408a(24) =1271205a(25) =-1790592a(26) =2508783a(27) =-3487424a(28) =4824825a(29) =-6641664