Number of permutations that avoid the barred pattern bar{1}43bar{5}2.
A201497
Number of permutations that avoid the barred pattern bar{1}43bar{5}2.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =43a(6) =145a(7) =538a(8) =2194a(9) =9790a(10) =47491a(11) =248706a(12) =1396799a(13) =8363711a(14) =53121000a(15) =356309314a(16) =2514395528a(17) =18606000547a(18) =143956459002
External references
- oeis: A201497