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a(n) = 10^n mod n^10.
1

%I #11 Dec 19 2024 13:20:58

%S 0,100,1000,10000,100000,1000000,10000000,100000000,1000000000,0,

%T 22187726197,9322172416,74188586872,207144033280,88222656250,

%U 1041257005056,654556028253,1391503283200,4084075030363,0,2770357806334,15498434643968,29882775483895,5484153143296

%N a(n) = 10^n mod n^10.

%H Harry J. Smith, <a href="/A066432/b066432.txt">Table of n, a(n) for n = 1..500</a>

%t Table[ Mod[ 10^n, n^10], {n, 1, 25} ]

%o (PARI) a(n) = { lift(Mod(10, n^10)^n) } \\ _Harry J. Smith_, Feb 13 2010

%Y Cf. A066606.

%K nonn

%O 1,2

%A _Robert G. Wilson v_, Dec 27 2001