Number of connected graphs with vertices labeled with positive integers summing to n.
A340025
Number of connected graphs with vertices labeled with positive integers summing to n.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =12a(5) =41a(6) =210a(7) =1478a(8) =17128a(9) =352926a(10) =14181309a(11) =1129005180a(12) =175491164826
External references
- oeis: A340025