Fishburn numbers: number of linearized chord diagrams of degree n; also number of nonisomorphic interval orders on n unlabeled points.
A022493
Fishburn numbers: number of linearized chord diagrams of degree n; also number of nonisomorphic interval orders on n unlabeled points.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =53a(6) =217a(7) =1014a(8) =5335a(9) =31240a(10) =201608a(11) =1422074a(12) =10886503a(13) =89903100a(14) =796713190a(15) =7541889195a(16) =75955177642a(17) =810925547354
External references
- oeis: A022493