a(n) is the number of words of length 2n in the language F, the language of "parity-constrained-shuffle of well-parenthesized words".
A116456
a(n) is the number of words of length 2n in the language F, the language of "parity-constrained-shuffle of well-parenthesized words".
Terms
- a(0) =1a(1) =2a(2) =8a(3) =40a(4) =228a(5) =1424a(6) =9520a(7) =67064a(8) =492292a(9) =3735112a(10) =29114128a(11) =232077344a(12) =1885195276a(13) =15562235264a(14) =130263211680
External references
- oeis: A116456