Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #9 Oct 13 2015 02:55:21
%S 1,5,20,84,388,1951,10529,60478,367953,2362503,15955673,113015123,
%T 837307541,6473306155,52110629576,435951806195,3783475965645,
%U 34007779661168,316120859847935,3034730002671251,30048957645720682,306529788241138211,3217941347005747296,34730178825735671711,384990885899299757336,4379518943963832643173,51083106730348426001558
%N Number of crossing partitions of n.
%H M. Klazar, <a href="http://dx.doi.org/10.1016/S0097-3165(03)00014-1">Bell numbers, their relatives and algebraic differential equations</a>, J. Combin. Theory, A 102 (2003), 63-87.
%K nonn,easy,nice
%O 4,2
%A _N. J. A. Sloane_, Nov 12 2004
%E More terms from _Vladeta Jovovic_, Jul 11 2007