Number of arcs covered by other arcs in all RNA secondary structures of size n+5 (i.e., with n+5 nodes).
A110318
Number of arcs covered by other arcs in all RNA secondary structures of size n+5 (i.e., with n+5 nodes).
Terms
- a(0) =1a(1) =5a(2) =17a(3) =53a(4) =157a(5) =448a(6) =1250a(7) =3434a(8) =9326a(9) =25114a(10) =67196a(11) =178895a(12) =474398a(13) =1254072a(14) =3306738a(15) =8701193a(16) =22857026a(17) =59958380a(18) =157098360a(19) =411214120a(20) =1075491286a(21) =2810892598a(22) =7342205478a(23) =19168694232a(24) =50023584613a(25) =130497101659a(26) =340325126923a(27) =887307420361
External references
- oeis: A110318