Triangle read by rows: T(n, k) is the number of forests on n labeled nodes with k edges. T(n, k) for n >= 1 and 0 <= k <= n-1.
A138464
Triangle read by rows: T(n, k) is the number of forests on n labeled nodes with k edges. T(n, k) for n >= 1 and 0 <= k <= n-1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =3a(6) =1a(7) =6a(8) =15a(9) =16a(10) =1a(11) =10a(12) =45a(13) =110a(14) =125a(15) =1a(16) =15a(17) =105a(18) =435a(19) =1080a(20) =1296a(21) =1a(22) =21a(23) =210a(24) =1295a(25) =5250a(26) =13377a(27) =16807a(28) =1a(29) =28
External references
- oeis: A138464