Number of defective (binary) heaps on n elements having one half of their ancestor-successor pairs (rounded down) distorted.

A324075

Number of defective (binary) heaps on n elements having one half of their ancestor-successor pairs (rounded down) distorted.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =6a(5) =24a(6) =120a(7) =720a(8) =5040a(9) =40320a(10) =359520a(11) =3590400a(12) =39362400a(13) =472919040a(14) =6133670400a(15) =85948262400

External references