Number of integer elements in the subsets of the subsets of the integers 1 to n.

A087084

Number of integer elements in the subsets of the subsets of the integers 1 to n.

Terms

    a(0) =0a(1) =0a(2) =2a(3) =32a(4) =1536a(5) =1048576a(6) =171798691840

External references