Greatest common divisor of (n+2)! and n^n.

Terms

a(0) =1a(1) =4a(2) =3a(3) =16a(4) =5a(5) =576a(6) =7a(7) =256a(8) =81a(9) =25600a(10) =11a(11) =497664a(12) =13a(13) =802816a(14) =91125a(15) =65536a(16) =17a(17) =1719926784a(18) =19a(19) =327680000a(20) =6751269a(21) =507510784a(22) =23a(23) =495338913792a(24) =15625a(25) =5670699008a(26) =1594323a(27) =161128382464a(28) =29a(30) =31