Number of rooted directed trees on n nodes with a green root.

A097628

Number of rooted directed trees on n nodes with a green root.

Terms

    a(0) =0a(1) =2a(2) =15a(3) =232a(4) =4535a(5) =114276a(6) =3478083a(7) =124625040a(8) =5135162607a(9) =239298611020

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