Number of permutations of size n avoiding the three vincular patterns 2-41-3, 3-14-2 and 3-41-2.
A281784
Number of permutations of size n avoiding the three vincular patterns 2-41-3, 3-14-2 and 3-41-2.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =21a(4) =82a(5) =346a(6) =1547a(7) =7236a(8) =35090a(9) =175268a(10) =897273a(11) =4690392a(12) =24961300a(13) =134917123a(14) =739213795a(15) =4099067786a(16) =22973964976a(17) =129998127216a(18) =741951610676
External references
- oeis: A281784