

A055107


Triangle T(k,n) giving number of symmetric polynomials of degree n in k noncommuting variables, n >=2, 2 <= k <= n.


14



1, 1, 1, 1, 4, 1, 1, 8, 12, 1, 1, 13, 44, 33, 1
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OFFSET

0,5


REFERENCES

M. C. Wolf, Symmetric Functions of Noncommutative Elements, Duke Math. J., 2 (1936), 626637.


LINKS

Table of n, a(n) for n=0..14.


EXAMPLE

1; 1,1; 1,4,1; 1,8,12,1; 1,13,44,33,1; ...


CROSSREFS

Row sums are A074664. Cf. A055105, A055106.
Sequence in context: A100754 A296405 A174035 * A272867 A206438 A128137
Adjacent sequences: A055104 A055105 A055106 * A055108 A055109 A055110


KEYWORD

nonn,tabl,nice


AUTHOR

N. J. A. Sloane, Jun 14 2000


STATUS

approved



