Triangle read by rows: T(n, m) = number of forests with n nodes and m labeled trees. Also number of forests with exactly n - m edges on n labeled nodes.
A105599
Triangle read by rows: T(n, m) = number of forests with n nodes and m labeled trees. Also number of forests with exactly n - m edges on n labeled nodes.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =1a(6) =16a(7) =15a(8) =6a(9) =1a(10) =125a(11) =110a(12) =45a(13) =10a(14) =1a(15) =1296a(16) =1080a(17) =435a(18) =105a(19) =15a(20) =1a(21) =16807a(22) =13377a(23) =5250a(24) =1295a(25) =210a(26) =21a(27) =1a(28) =262144a(29) =200704
External references
- oeis: A105599