Number of algebraically independent elements of degree n in the algebra of symmetric polynomials in noncommuting variables.

A074664

Number of algebraically independent elements of degree n in the algebra of symmetric polynomials in noncommuting variables.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =22a(5) =92a(6) =426a(7) =2146a(8) =11624a(9) =67146a(10) =411142a(11) =2656052a(12) =18035178a(13) =128318314a(14) =954086192a(15) =7396278762a(16) =59659032142a(17) =499778527628

External references