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%I #2 May 01 2014 02:47:42
%S 0,0,1,0,2,3,0,0,4,5,0,0,1,6,7,0,0,1,2,8,9,0,0,1,3,4,10,11,0,0,1,1,5,
%T 6,12,13,0,0,1,1,2,7,8,14,15,0,0,1,1,2,3,9,10,16,17,0,0,1,1,2,4,5,11,
%U 12,18,19,0,0,1,1,2,2,6,7,13,14,20,21,0,0,1,1,2,2,3,8,9,15,16,22,23,0,0,1
%N Y-projection of the tabular N X N -> N bijection A072734.
%o (Scheme) (define (A072741 n) (A002262 (A072735 n)))
%Y The X-projection is A072740. Composition of A002262 & A072735. A072784(n) = A072741(n)-A072737(n).
%K nonn,tabl
%O 0,5
%A _Antti Karttunen_, Jun 12 2002
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