Number of labeled trees of nonempty sets with n points. (Each node is a set of 1 or more points.)
A038052
Number of labeled trees of nonempty sets with n points. (Each node is a set of 1 or more points.)
Terms
- a(0) =1a(1) =1a(2) =2a(3) =7a(4) =42a(5) =376a(6) =4513a(7) =68090a(8) =1238968a(9) =26416729a(10) =646140364a(11) =17837852044a(12) =548713088399
External references
- oeis: A038052