Number of connected matchings with n crossings, in a disk.
A232222
Number of connected matchings with n crossings, in a disk.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =65a(4) =354a(5) =2035a(6) =12151a(7) =74618a(8) =468233a(9) =2989093a(10) =19350384a(11) =126730636a(12) =838161358a(13) =5589998777a(14) =37552863737a(15) =253877488505
External references
- oeis: A232222