Number of symmetric ways to lace a shoe that has n pairs of eyelets.
A078676
Number of symmetric ways to lace a shoe that has n pairs of eyelets.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =43a(4) =350a(5) =3547a(6) =43011a(7) =607042
External references
- oeis: A078676