A135409 - OEIS

%I #8 Dec 15 2017 17:44:31

%S 0,244,939,38842,399158,3185054,8997888,89003533,380705305,0,

%T 120958456566,909738914355,10691161155707,215413743487843,

%U 1146359095715014,11741086634604569,186260344930883645,586697640742217928,22434377949474656108,86030233471862779595

%N Sum of all n-digit Keith numbers.

%C There are no 1-digit and 10-digit Keith numbers.

%H _Jason Earls_ and Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/KeithNumber.html">Keith Number</a>.

%e Sum of all 2-digit Keith numbers is 244.

%e Sum of all 3-digit Keith numbers is 939.

%e Sum of all 4-digit Keith numbers is 38842.

%Y Cf. A007629.

%K nonn,base

%O 1,2

%A _Parthasarathy Nambi_, Dec 10 2007

%E Extended by _T. D. Noe_, Mar 15 2011