Number of marked chord diagrams (linear words in which each letter appears twice) with n chords, whose intersection graph is connected and distance-hereditary.
A354588
Number of marked chord diagrams (linear words in which each letter appears twice) with n chords, whose intersection graph is connected and distance-hereditary.
Terms
- a(0) =1a(1) =4a(2) =27a(3) =226a(4) =2116a(5) =21218a(6) =222851a(7) =2420134a(8) =26954622a(9) =306203536a(10) =3534170486a(11) =41326973520a(12) =488562349730
External references
- oeis: A354588