%I A059318
%S A059318 1,1,1,1,1,0,0,0,1,1,1,0,1,0,1,1,1,0,1,0,1,0,1,0,1,1,1,1,0,0,0,0,0,1,1,
%T A059318 1,1,0,0,0,0,0,1,0,0,0,0,0,1,1,1,0,1,1,0,1,1,1,0,1,1,0,1,1,1,0,1,0,0,0,
%U A059318 0,0,0,0,0,0,0,0,1,0,1,1,1,1,0,1,1,1,0,1,1,1,0,1,1,1,0,1,1,1,1,0,0,0,1
%N A059318 Pascal's "rhombus" (actually a triangle) mod 2, read by rows: each entry 
               is sum modulo 2 of 3 terms above it in previous row and one term 
               above it two rows back.
%D A059318 J. Goldwasser et al., The density of ones in Pascal's rhombus, Discrete 
               Math., 204 (1999), 231-236.
%e A059318 1; 1,1,1; 1,0,0,0,1; 1,1,0,1,0,1,1; ...
%Y A059318 Cf. A059317, A059319, A059320, A007318.
%Y A059318 Sequence in context: A014119 A084052 A130630 this_sequence A118109 A104037 
               A014044
%Y A059318 Adjacent sequences: A059315 A059316 A059317 this_sequence A059319 A059320 
               A059321
%K A059318 tabf,easy,nonn
%O A059318 0,1
%A A059318 N. J. A. Sloane (njas(AT)research.att.com), Jan 26 2001
%E A059318 More terms from Larry Reeves (larryr(AT)acm.org), Jan 30 2001