Trajectory of 2 under the map x -> A274940(x).

Terms

a(0) =2a(1) =6a(2) =12a(3) =84a(4) =168a(5) =24a(6) =120a(7) =360a(8) =4680a(9) =32760a(10) =65520a(11) =2031120a(12) =4062240a(13) =8124480a(14) =1031808960a(15) =2063617920a(16) =4127235840a(17) =8254471680a(18) =16508943360a(19) =33017886720a(20) =259983360a(21) =8386560a(22) =4193280a(23) =373201920a(24) =8583644160a(25) =25750932480a(26) =1980840960a(27) =282977280a(28) =1414886400a(29) =43861478400