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 #11 Nov 15 2015 18:53:44
%S 1,1,1,1,1,2,0,1,1,3,0,5,0,0,1,1,4,0,11,0,5,4,0,0,0,1,1,5,0,19,0,21,
%T 10,0,9,5,5,0,0,0,0,1,1,6,0,29,0,49,20,21,35,21,15,0,28,0,0,6,0,0,0,0,
%U 0,1,1,7,0,41,0,92,35,84,90,56,91,42,134,0,0,21,28,20,14,0,0,7,0,0,0,0,0,0,1
%N Triangle read by rows: T(n>=0, 0<=k<=A161680(n)) is the number of standard tableaux of size n whose shape contains k attacking pairs.
%C Row sums give A000085.
%H Alois P. Heinz, <a href="/A263412/b263412.txt">Rows n = 0..50, flattened</a>
%H FindStat - Combinatorial Statistic Finder, <a href="http://www.findstat.org/StatisticsDatabase/St000016">The number of attacking pairs of a standard tableau</a>.
%e Triangle begins:
%e 1;
%e 1;
%e 1,1;
%e 1,2,0,1;
%e 1,3,0,5,0,0,1;
%e 1,4,0,11,0,5,4,0,0,0,1;
%e 1,5,0,19,0,21,10,0,9,5,5,0,0,0,0,1;
%e 1,6,0,29,0,49,20,21,35,21,15,0,28,0,0,6,0,0,0,0,0,1;
%e 1,7,0,41,0,92,35,84,90,56,91,42,134,0,0,21,28,20,14,0,0,7,0,0,0,0,0,0,1;
%e ...
%Y Cf. A000085, A161680.
%K nonn,tabf
%O 0,6
%A _Christian Stump_, Oct 17 2015
%E Two terms (for rows 0 and 1) prepended by _Alois P. Heinz_, Nov 15 2015