Number of 3-noncrossing stack-free partial matchings without 1-arcs.
A132441
Number of 3-noncrossing stack-free partial matchings without 1-arcs.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =12a(5) =31a(6) =88a(7) =263a(8) =814a(9) =2604a(10) =8575a(11) =28936a(12) =99726a(13) =350151a(14) =1249865
External references
- oeis: A132441