0,1
J. Wallgren, Hierarchical sequences
Sequence in context: A104291 A172495 A003867 * A110159 A061983 A079884
Adjacent sequences: A059132 A059133 A059134 * A059136 A059137 A059138
easy,nonn
Jonas Wallgren (jonwa(AT)ida.liu.se), Jan 19 2001