Search: id:A104606
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%I A104606
%S A104606 1,0,1,0,1,0,1,0,0,1,0,0,1,1,1,1,1,0,1,1,0,1,1,1,0,0,1,1,0,0,0,1,1,1,1,
%T A104606 1,0,1,0,0,0,0,1,1,0,0,0,1,0,0,0,1,0,1,1,1,0,1,1,1,1,0,0,1,1,1,0,1,1,0,
%U A104606 1,1,0,1,1,0,0,1,1,0,0,1,1,0,1,0,1,1,1,1,0,1,0,1,0,1,0,1,0,0,1,1,0,1,0
%N A104606 Write the natural numbers in base 2 in a triangle with k digits in the 
               k-th row, as shown below. Sequence gives the leading diagonal.
%C A104606 1
%C A104606 10
%C A104606 111
%C A104606 0010
%C A104606 11101
%C A104606 111000...
%t A104606 t = Flatten[ IntegerDigits[ Range[660], 2]]; t[[Table[n(n + 1)/2, {n, 
               105}]]]
%Y A104606 Cf. A104607, A104608, A104609, A104610, A104611, A104612, A104613, A091425, 
               A104614, A104615, A104616, A104617, A104618, A104619, A104620.
%Y A104606 Sequence in context: A099991 A091069 A087003 this_sequence A014389 A014349 
               A014269
%Y A104606 Adjacent sequences: A104603 A104604 A104605 this_sequence A104607 A104608 
               A104609
%K A104606 base,nonn
%O A104606 1,1
%A A104606 Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 16 2005

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