Number of reversible string structures with n beads using exactly six different colors.
A056330
Number of reversible string structures with n beads using exactly six different colors.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =12a(7) =142a(8) =1346a(9) =11511a(10) =89974a(11) =662674a(12) =4662574a(13) =31724735a(14) =210361046a(15) =1367510326a(16) =8752976610a(17) =55343947975a(18) =346541488998
External references
- oeis: A056330