A055479 - OEIS

%I #15 Jul 02 2025 16:01:59

%S 1,11,121,1331,14641,162151,1783661,20731371,228145181,2520607101,

%T 27726678111,316104570221,3477151372431,38358665206741,

%U 433056427275251,4763631711137761,53511048822526471,588621548147802281,6585837140636825201,73555318547116177211

%N Powers of ten written in base 9.

%H Alois P. Heinz, <a href="/A055479/b055479.txt">Table of n, a(n) for n = 0..954</a>

%p b:= proc(n) local m; m:= n; "";

%p       while m>0 do irem(m, 9, 'm'), % od;

%p       parse(cat(%))

%p     end:

%p a:= n-> b(10^n):

%p seq(a(n), n=0..23);  # _Alois P. Heinz_, Aug 23 2019

%t a[n_]:=FromDigits[IntegerDigits[10^n,9]]; Array[a,20,0] (* _Stefano Spezia_, Jun 01 2025 *)

%Y Cf. A000468, A011557, A325203.

%K easy,nonn,base

%O 0,2

%A _Henry Bottomley_, Jun 27 2000

%E More terms from _James Sellers_, Jul 04 2000