A189508 - OEIS

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A189508

Column 2 of triangle in A189507.

%I #12 Apr 20 2015 13:31:21

%S 1,3,21,160,1620,19068,264420,4166880,74011488,1459381440,31674232128

%N Column 2 of triangle in A189507.

%H Simona Grusea and Anthony Labarre, <a href="http://arxiv.org/abs/1104.3353">The distribution of cycles in breakpoint graphs of signed permutations</a>, arXiv:1104.3353v1

%Y Cf. A189507.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, Apr 23 2011

%E Added missing term for n=9, _Anthony Labarre_, Feb 14 2013