Triangle read by rows: T(n,k) is the number of coalescent histories for an n-leaf caterpillar species tree and an identically labeled k-pseudocaterpillar gene tree, 3 <= k <= n.
A380766
Triangle read by rows: T(n,k) is the number of coalescent histories for an n-leaf caterpillar species tree and an identically labeled k-pseudocaterpillar gene tree, 3 <= k <= n.
Terms
- a(0) =1a(1) =3a(2) =3a(3) =9a(4) =11a(5) =9a(6) =28a(7) =37a(8) =37a(9) =28a(10) =90a(11) =124a(12) =134a(13) =124a(14) =90a(15) =297a(16) =420a(17) =473a(18) =473a(19) =420a(20) =297a(21) =1001a(22) =1441a(23) =1665a(24) =1735a(25) =1665a(26) =1441a(27) =1001a(28) =3432a(29) =5005
External references
- oeis: A380766