Number of separate orbits/cycles to which the Catalan bijections A069767/A069768 partition each A000108(n) structures encoded in the range [A014137(n-1)..A014138(n-1)] of the sequence A014486/A063171.
A073431
Number of separate orbits/cycles to which the Catalan bijections A069767/A069768 partition each A000108(n) structures encoded in the range [A014137(n-1)..A014138(n-1)] of the sequence A014486/A063171.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =12a(7) =28a(8) =65a(9) =160a(10) =408a(11) =1074a(12) =2898a(13) =7998a(14) =22508a(15) =64426a(16) =187251a(17) =551730a(18) =1645840a(19) =4964876a(20) =15130808a(21) =46545788a(22) =144424944a(23) =451715460
External references
- oeis: A073431