a(n) = n^9 + n.

Terms

a(0) =0a(1) =2a(2) =514a(3) =19686a(4) =262148a(5) =1953130a(6) =10077702a(7) =40353614a(8) =134217736a(9) =387420498a(10) =1000000010a(11) =2357947702a(12) =5159780364a(13) =10604499386a(14) =20661046798a(15) =38443359390a(16) =68719476752a(17) =118587876514a(18) =198359290386a(19) =322687697798a(20) =512000000020a(21) =794280046602