Number of defective (binary) heaps on n elements where one ancestor-successor pair does not have the correct order.

A324062

Number of defective (binary) heaps on n elements where one ancestor-successor pair does not have the correct order.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =2a(4) =6a(5) =16a(6) =60a(7) =240a(8) =840a(9) =3584a(10) =16800a(11) =96000a(12) =475200a(13) =3041280a(14) =19219200a(15) =153753600a(16) =864864000a(17) =6560153600a(18) =47048601600a(19) =439934976000

External references