n^10 mod 10^n.

Terms

a(0) =1a(1) =24a(2) =49a(3) =8576a(4) =65625a(5) =466176a(6) =2475249a(7) =73741824a(8) =486784401a(9) =0a(10) =25937424601a(11) =61917364224a(12) =137858491849a(13) =289254654976a(14) =576650390625