login
Smallest power of 9 that begins with n.
10

%I #13 Jan 29 2017 08:53:25

%S 1,282429536481,387420489,4782969,59049,6561,729,81,9,

%T 109418989131512359209,11972515182562019788602740026717047105681,

%U 12157665459056928801,1350851717672992089

%N Smallest power of 9 that begins with n.

%H Seiichi Manyama, <a href="/A018869/b018869.txt">Table of n, a(n) for n = 1..369</a>

%F a(n) = 9^A018870(n). - _Seiichi Manyama_, Jan 29 2017

%F a(9^n) = 9^n for n >= 0. - _Seiichi Manyama_, Jan 29 2017

%Y Cf. A018802 (k=2), A018857 (k=3), A018859 (k=4), A018861 (k=5), A018863 (k=6), A018865 (k=7), A018867 (k=8), this sequence (k=9).

%K nonn,base

%O 1,2

%A _David W. Wilson_