%I
%S 1,1,1,1,1,1,2,0,1,1,1,3,3,2,2,0,3,0,0,0,1,1,1,3,5,8,5,7,4,8,2,5,1,5,
%T 0,3,0,0,0,4,0,0,0,0,0,0,0,1
%N Triangle read by rows: T(n,k) (n>=0, k>=n+1) is the number of posets with n elements and k chains.
%C Row sums give A000112.
%H FindStat  Combinatorial Statistic Finder, <a href="http://www.findstat.org/StatisticsDatabase/St000180">The number of chains of a poset</a>.
%e Triangle begins:
%e 1,
%e 1,
%e 1,1,
%e 1,1,2,0,1,
%e 1,1,3,3,2,2,0,3,0,0,0,1,
%e 1,1,3,5,8,5,7,4,8,2,5,1,5,0,3,0,0,0,4,0,0,0,0,0,0,0,1,
%e ...
%Y Cf. A000112.
%K nonn,tabf
%O 0,7
%A _Christian Stump_, Oct 28 2015
