Maximal order of element of alternating group A_{2n}.

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =15a(5) =21a(6) =35a(7) =60a(8) =105a(9) =140a(10) =210a(11) =420a(12) =420a(13) =1155a(14) =1365a(15) =2310a(16) =4620a(17) =5460a(18) =9240a(19) =13860a(20) =16380a(21) =27720a(22) =32760a(23) =60060a(24) =60060a(25) =120120a(26) =180180a(27) =180180a(28) =360360a(29) =360360