Number of rooted tandem duplication trees on n gene segments.

A264868

Number of rooted tandem duplication trees on n gene segments.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =6a(4) =22a(5) =92a(6) =420a(7) =2042a(8) =10404a(9) =54954a(10) =298648a(11) =1660714a(12) =9410772a(13) =54174212a(14) =316038060a(15) =1864781388a(16) =11111804604a(17) =66782160002a(18) =404392312896

External references