OFFSET
1,1
EXAMPLE
1;
0;
1, 0;
0, 1, 0, 1;
1, 0, 1, 0, 0, 1, 0, 1;
0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0;
1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0;
0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0...
MATHEMATICA
s = {1}; Do[s = Join[s, Mod[s + 1, 2]]; s = Join[s, s], {n, 4}]; s (* Robert G. Wilson v, Dec 22 2005 *)
PROG
s=[1 0]; loop s=[s s]; s=[s inv(s)] endloop
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Alexandre Losev, Dec 15 2005
EXTENSIONS
More terms from Robert G. Wilson v, Dec 22 2005
STATUS
approved