Number of paraffins.

Terms

a(0) =4a(1) =16a(2) =48a(3) =108a(4) =216a(5) =384a(6) =640a(7) =1000a(8) =1500a(9) =2160a(10) =3024a(11) =4116a(12) =5488a(13) =7168a(14) =9216a(15) =11664a(16) =14580a(17) =18000a(18) =22000a(19) =26620a(20) =31944a(21) =38016a(22) =44928a(23) =52728a(24) =61516a(25) =71344a(26) =82320a(27) =94500a(28) =108000a(29) =122880