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n = Sum(T(n,k)*2^k: 0<=k<=n);
T(n, A070939(n))=1 for n>0, T(n,k)=0 for k>A070939(n);
A021913(0)=T(0,0), A021913(n)=T(n,1) for n>0.
Table of n, a(n) for n=0..104.
Sequence in context: A115199 A085242 A059620 * A111748 A130198 A104893
Adjacent sequences: A083648 A083649 A083650 * A083652 A083653 A083654
Reinhard Zumkeller, May 01 2003