%I #6 Feb 09 2019 21:26:45
%S 0,19200,947760,49680576,1744142400,60169824000,1646888944800,
%T 42633973724160,1013373907056960,22797317814635520,502986050203680000,
%U 10556482426015426560,222685725334400064000,4535040919258899456000,92995172484979478630400,1880492299058130490163200
%N Number of defective (binary) heaps on n elements with exactly ten defects.
%C Or number of permutations p of [n] having exactly ten indices i in {1,...,n} such that p(i) > p(floor(i/2)).
%H Alois P. Heinz, <a href="/A323966/b323966.txt">Table of n, a(n) for n = 10..200</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Heap.html">Heap</a>
%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Binary_heap">Binary heap</a>
%Y Column k=10 of A306343.
%Y Cf. A056971.
%K nonn
%O 10,2
%A _Alois P. Heinz_, Feb 09 2019