%I A126631
%S A126631 9,77,633,5021,38409,283277,2019033,13963901,94144809,621444077,
%T A126631 4031587833,25787305181,163054382409,1021372934477,6349128459033,
%U A126631 39222102764861,241061530639209,1475385002210477,8998880800344633
%N A126631 a(n) is the number of nonnegative integers k less than 10^n such that 
               the decimal representation of k lacks the digit 1, at least one of 
               digits 2,3, at least one of digits 4,5 and at least one of digits 
               6,7,8,9.
%H A126631 Milan Janjic, <a href="http://www.pmfbl.org/janjic/">Enumerative Formulas 
               for Some Functions on Finite Sets</a>
%F A126631 a(n)=16*6^n-40*5^n+44*4^n-26*3^n+8*2^n-1
%e A126631 a(8)=13963901
%p A126631 f:=n->16*6^n-40*5^n+44*4^n-26*3^n+8*2^n-1;
%Y A126631 Cf. A125630, A125948, A125947, A125946, A125945, A125910, A125909, A125908, 
               A125880, A125897, A125904, A125858.
%Y A126631 Sequence in context: A056329 A082677 A075608 this_sequence A046150 A124131 
               A000445
%Y A126631 Adjacent sequences: A126628 A126629 A126630 this_sequence A126632 A126633 
               A126634
%K A126631 nonn
%O A126631 1,1
%A A126631 Aleksandar M. Janjic and Milan R. Janjic (agnus(AT)blic.net), Feb 08 
               2007