Greatest common divisor of n! and n^n.

Terms

a(0) =1a(1) =2a(2) =3a(3) =8a(4) =5a(5) =144a(6) =7a(7) =128a(8) =81a(9) =6400a(10) =11a(11) =248832a(12) =13a(13) =100352a(14) =91125a(15) =32768a(16) =17a(17) =429981696a(18) =19a(19) =163840000a(20) =6751269a(21) =63438848a(22) =23a(23) =247669456896a(24) =15625a(25) =1417674752a(26) =1594323a(27) =80564191232a(28) =29a(30) =31