McKay-Thompson series of class 20a for Monster.

Terms

a(0) =1a(1) =-6a(2) =-7a(3) =-14a(4) =-20a(5) =-42a(6) =-55a(7) =-112a(8) =-139a(9) =-252a(10) =-314a(11) =-524a(12) =-678a(13) =-1042a(14) =-1335a(15) =-1980a(16) =-2553a(17) =-3688a(18) =-4681a(19) =-6592a(20) =-8341a(21) =-11520a(22) =-14557a(23) =-19626a(24) =-24692a(25) =-32834a(26) =-41135a(27) =-54016a(28) =-67279a(29) =-87328