Edge-rooted tree-like octagonal systems (see the Cyvin et al. reference for precise definition).
A121113
Edge-rooted tree-like octagonal systems (see the Cyvin et al. reference for precise definition).
Terms
- a(0) =0a(1) =0a(2) =6a(3) =60a(4) =522a(5) =4452a(6) =38130a(7) =329832a(8) =2884056a(9) =25476936a(10) =227145654a(11) =2041930920a(12) =18490834362a(13) =168537705300
External references
- oeis: A121113