Number of ways to lace a shoe that has n pairs of eyelets, assuming the lacing satisfies certain conditions.
A078674
Number of ways to lace a shoe that has n pairs of eyelets, assuming the lacing satisfies certain conditions.
Terms
- a(0) =1a(1) =3a(2) =50a(3) =2122a(4) =155712a(5) =17441962
External references
- oeis: A078674