Number of restricted barred preferential arrangements of an n-set having 3 bars in which 3 fixed sections are restricted sections and 1 section is a free section.
A259533
Number of restricted barred preferential arrangements of an n-set having 3 bars in which 3 fixed sections are restricted sections and 1 section is a free section.
Terms
- a(0) =1a(1) =4a(2) =18a(3) =94a(4) =582a(5) =4294a(6) =37398a(7) =378214a(8) =4366422a(9) =56697574a(10) =817979478a(11) =12981058534a(12) =224732536662
External references
- oeis: A259533