a(n) = 5^n mod n^5.

Terms

a(0) =0a(1) =25a(2) =125a(3) =625a(4) =0a(5) =73a(6) =10897a(7) =30177a(8) =4508a(9) =65625a(10) =29672a(11) =36433a(12) =263034a(13) =288873a(14) =575000a(15) =159681a(16) =592030a(17) =1485433a(18) =1639363a(19) =1240625a(20) =250928a(21) =928073a(22) =4040001a(23) =93601a(24) =0a(25) =10915033a(26) =14288075a(27) =16048657a(28) =3176520a(29) =4515625