Largest term in wrecker ball sequence starting with n.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =21a(5) =26a(6) =6a(7) =6843a(8) =8a(9) =14a(10) =10a(11) =72a(12) =365a(13) =366a(14) =14a(15) =15a(16) =352a(17) =4674389a(18) =18a(19) =22a(20) =891114a(21) =21a(22) =102a(23) =23a(24) =31a(25) =7856204a(26) =26a(27) =27a(28) =28a(29) =1700