%I #3 Oct 14 2012 12:58:14
%S 1,1,2,3,4,5,6,1,2,3,4,5,6,7,2,3,4,5,6,7,8,3,4,5,6,7,8,9,4,5,6,7,8,9,
%T 10,5,6,7,8,9,10,11,6,7,8,9,10,11,12,2,3,4,5,6,7,8,3,4,5,6,7,8,9,4,5,
%U 6,7,8,9,10,5,6,7,8,9,10,11,6,7,8,9,10,11,12,7,8,9,10,11,12,13,8,9,10,11
%N Base 7 digital convolution sequence.
%F For example, 287 = 560 in base 7, so a(287) = 5a(2)+6a(1)+0a(0).
%K nonn,base
%O 1,3
%A _David W. Wilson_
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