Number of labeled connected graphs with loops with n edges (the vertices are {1,2,...,k} for some k).
A322151
Number of labeled connected graphs with loops with n edges (the vertices are {1,2,...,k} for some k).
Terms
- a(0) =1a(1) =2a(2) =5a(3) =27a(4) =216a(5) =2311a(6) =30988a(7) =499919a(8) =9431026a(9) =203743252a(10) =4960335470a(11) =134382267082
External references
- oeis: A322151