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%I #9 Aug 21 2020 09:12:45
%S 1,128,6765,265720,9112264,290926848,8916942687,266668876540,
%T 7853149169635,228982270335000,6632994268595136,191292945772217856,
%U 5500214758962096400,157819424038439232000,4521902974531722618723
%N Degree of variety K_{2,n}^3.
%H M. S. Ravi et al., <a href="https://doi.org/10.1137/S036301299325270X">Dynamic pole assignment and Schubert calculus</a>, SIAM J. Control Optimization, 34 (1996), 813-832, esp. p. 825.
%o (PARI) K(n,q=3)=(2*n+n*q+2*q)!*sum(j=0,q,((q-2*j)*(n+2)+1)/(n+j*(n+2))!/(n+1+(q-j)*(n+2))!)
%Y Cf. A013698 (q=1), A013699 (q=2), A013701 (q=4), A013702 (q=5).
%K nonn,easy
%O 1,2
%A Joachim.Rosenthal(AT)nd.edu (Joachim Rosenthal)
%E Edited by _Ralf Stephan_, May 13 2003
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