OFFSET
1,2
COMMENTS
FORMULA
Let L(n)=3n-2.
Let U(n)=A007494(n); U is the complement of L.
The tree-array T(n,k) is then given by rows:
T(0,0)=1; T(1,0)=2;
T(n,2j)=L(T(n-1),j);
T(n,2j+1)=U(T(n-1),j);
for j=0,1,...,2^(n-1)-1, n>=2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Dec 30 2010
STATUS
approved