Search: id:A055107
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%I A055107
%S A055107 1,1,1,1,4,1,1,8,12,1,1,13,44,33,1
%N A055107 Triangle T(k,n) giving number of symmetric polynomials of degree n in 
               k noncommuting variables, n >=2, 2 <= k <= n.
%D A055107 M. C. Wolf, Symmetric Functions of Non-commutative Elements, Duke Math. 
               J., 2 (1936), 626-637.
%e A055107 1; 1,1; 1,4,1; 1,8,12,1; 1,13,44,33,1; ...
%Y A055107 Row sums are A074664. Cf. A055105, A055106.
%Y A055107 Sequence in context: A141541 A132789 A100754 this_sequence A128137 A136100 
               A141905
%Y A055107 Adjacent sequences: A055104 A055105 A055106 this_sequence A055108 A055109 
               A055110
%K A055107 nonn,tabl,nice
%O A055107 0,5
%A A055107 N. J. A. Sloane (njas(AT)research.att.com), Jun 14 2000

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