A139739 a(n) = 10^n mod 9^n.

0, 1, 19, 271, 3439, 40951, 468559, 434062, 13906558, 225159022, 3026431198, 5856821173, 152711390557, 2374402515013, 8492830180156, 176435471621404, 734899055740795, 16614091501667155, 99432188218005274, 544037976289055377, 2738676327544569592

Offset: 0

Author

N. J. A. Sloane, May 20 2008

Keywords

• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..300

Programs

Magma

[10^n mod 9^n: n in [0..20]]; // Vincenzo Librandi, Jun 02 2011

Mathematica

Table[PowerMod[10,n,9^n],{n,0,20}] (* Harvey P. Dale, Dec 15 2013 *)