Number of separate orbits to which permutations given in A057511/A057512 (induced by deep rotation of general parenthesizations/plane trees) partition each A000108(n) objects encoded by A014486 between (A014138(n-1)+1)-th and (A014138(n))-th terms.

A057513

Number of separate orbits to which permutations given in A057511/A057512 (induced by deep rotation of general parenthesizations/plane trees) partition each A000108(n) objects encoded by A014486 between (A014138(n-1)+1)-th and (A014138(n))-th terms.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =21a(6) =56a(7) =153a(8) =451a(9) =1357a(10) =4212a(11) =13308a(12) =42898a(13) =140276a(14) =465324a(15) =1561955a(16) =5300285a(17) =18156813a(18) =62732842a(19) =218405402a(20) =765657940

External references