Number of signed permutations of length n that are sortable to the identity permutation by some sequence of cdr (context-directed reversal) and cds (context-directed swap) moves.
A260506
Number of signed permutations of length n that are sortable to the identity permutation by some sequence of cdr (context-directed reversal) and cds (context-directed swap) moves.
Terms
- a(0) =1a(1) =3a(2) =18a(3) =140a(4) =1384a(5) =16428a(6) =228248
External references
- oeis: A260506