a(n) gives the A089840-index of the nonrecursive Catalan automorphism which is formed from A089840[n] by applying it to the left subtree of a binary tree and leaving the right-hand side subtree intact.
A123694
a(n) gives the A089840-index of the nonrecursive Catalan automorphism which is formed from A089840[n] by applying it to the left subtree of a binary tree and leaving the right-hand side subtree intact.
Terms
- a(0) =0a(1) =7a(2) =91a(3) =92a(4) =93a(5) =94a(6) =95a(7) =114a(8) =115a(9) =116a(10) =117a(11) =118a(12) =4207a(13) =4209a(14) =4211a(15) =4214a(16) =4216a(17) =4299a(18) =4301a(19) =4303a(20) =4305a(21) =4307a(22) =1228a(23) =1229a(24) =1230a(25) =1231a(26) =1232a(27) =1233a(28) =1234a(29) =1235
External references
- oeis: A123694