Number of independent polynomial invariants of symmetric matrix of order n.

A007719

Number of independent polynomial invariants of symmetric matrix of order n.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =11a(4) =30a(5) =95a(6) =328a(7) =1211a(8) =4779a(9) =19902a(10) =86682a(11) =393072a(12) =1847264a(13) =8965027a(14) =44814034a(15) =230232789a(16) =1213534723a(17) =6552995689a(18) =36207886517a(19) =204499421849

External references