Triangle read by rows: T(n,k) (k>=0) is the number of RNA secondary structures of size n (i.e., with n nodes) having k arcs that are covered by other arcs.
A110317
Triangle read by rows: T(n,k) (k>=0) is the number of RNA secondary structures of size n (i.e., with n nodes) having k arcs that are covered by other arcs.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =7a(6) =1a(7) =12a(8) =5a(9) =21a(10) =15a(11) =1a(12) =37a(13) =37a(14) =8a(15) =65a(16) =84a(17) =35a(18) =1a(19) =114a(20) =182a(21) =115a(22) =12a(23) =200a(24) =381a(25) =323a(26) =73a(27) =1a(28) =351a(29) =777
External references
- oeis: A110317