Order of (usually) simple Chevalley group D_2(q), q = prime power.

Terms

a(0) =36a(1) =144a(2) =3600a(3) =3600a(4) =28224a(5) =254016a(6) =129600a(7) =435600a(8) =1192464a(9) =16646400a(10) =5992704a(11) =11696400a(12) =36869184a(13) =60840000a(14) =96589584a(15) =148352400a(16) =221414400a(17) =1071645696a(18) =640494864a(19) =1186113600a(20) =1578631824a(21) =2692364544a(22) =3457440000a(23) =5537145744a(24) =10539075600a(25) =12873171600a(26) =68685926400