Number of planted trees: all sub-rooted trees from any node are identical; non-root, non-leaf nodes an even distance from the root are of degree 2.
A007439
Number of planted trees: all sub-rooted trees from any node are identical; non-root, non-leaf nodes an even distance from the root are of degree 2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =4a(6) =3a(7) =7a(8) =4a(9) =11a(10) =6a(11) =15a(12) =7a(13) =24a(14) =8a(15) =29a(16) =12a(17) =40a(18) =13a(19) =51a(20) =14a(21) =68a(22) =19a(23) =76a(24) =20a(25) =107a(26) =23a(27) =116a(28) =29a(29) =147
External references
- oeis: A007439