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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 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,5

REFERENCES

M. C. Wolf, Symmetric Functions of Non-commutative Elements, Duke Math. J., 2 (1936), 626-637.

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: A317065 A316932 A317703 * A297193 A272867 A206438

Adjacent sequences:  A055104 A055105 A055106 * A055108 A055109 A055110

KEYWORD

nonn,tabl,nice

AUTHOR

N. J. A. Sloane, Jun 14 2000

STATUS

approved

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Last modified August 15 22:40 EDT 2018. Contains 313782 sequences. (Running on oeis4.)