Index sequence to A089840: positions of bijections that preserve A127302 (the non-oriented form of binary trees) and whose behavior does not depend on whether there are internal or terminal nodes (leaves) in the neighborhood of any vertex.
A153830
Index sequence to A089840: positions of bijections that preserve A127302 (the non-oriented form of binary trees) and whose behavior does not depend on whether there are internal or terminal nodes (leaves) in the neighborhood of any vertex.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =7a(4) =15a(5) =21a(6) =27a(7) =46a(8) =92a(9) =114a(10) =149a(11) =169a(12) =225a(13) =251a(14) =299a(15) =400a(16) =638a(17) =753a(18) =1233a(19) =1348a(20) =1705a(21) =1823a(22) =1992a(23) =2097a(24) =2335a(25) =2451a(26) =2995a(27) =3128a(28) =3485a(29) =3607
External references
- oeis: A153830