Number of labeled graphs on 2n nodes with degree set {1,3}, with multiple edges and loops allowed.
A228694
Number of labeled graphs on 2n nodes with degree set {1,3}, with multiple edges and loops allowed.
Terms
- a(0) =1a(1) =5a(2) =186a(3) =22960a(4) =6831650a(5) =4071581010
External references
- oeis: A228694