Number of rooted ternary trees with n nodes; number of n-carbon alkyl radicals C(n)H(2n+1) ignoring stereoisomers.

A000598

Number of rooted ternary trees with n nodes; number of n-carbon alkyl radicals C(n)H(2n+1) ignoring stereoisomers.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =8a(6) =17a(7) =39a(8) =89a(9) =211a(10) =507a(11) =1238a(12) =3057a(13) =7639a(14) =19241a(15) =48865a(16) =124906a(17) =321198a(18) =830219a(19) =2156010a(20) =5622109a(21) =14715813a(22) =38649152a(23) =101821927a(24) =269010485a(25) =712566567a(26) =1891993344a(27) =5034704828a(28) =13425117806a(29) =35866550869

External references