Search: id:A135409
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%I A135409
%S A135409 0,244,939,38842,399158,3185054,8997888,89003533,380705305
%N A135409 Sum of all n-digit Keith numbers.
%C A135409 There are no 1-digit and 10-digit Keith numbers.
%H A135409 Jason Earls and Eric Weisstein's World of Mathematics, <a href="http:/
               /mathworld.wolfram.com/KeithNumber.html">Keith Number</a>.
%e A135409 Sum of all 2-digit Keith numbers is 244.
%e A135409 Sum of all 3-digit Keith numbers is 939.
%e A135409 Sum of all 4-digit Keith numbers is 38842.
%Y A135409 Cf. A007629.
%Y A135409 Sequence in context: A051002 A044987 A031786 this_sequence A081864 A002594 
               A085440
%Y A135409 Adjacent sequences: A135406 A135407 A135408 this_sequence A135410 A135411 
               A135412
%K A135409 nonn,base
%O A135409 2,2
%A A135409 Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Dec 10 2007

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