Number of permutations of length n which avoid the patterns 1432, 2314, 3124.

Terms

a(0) =1a(1) =2a(2) =6a(3) =21a(4) =73a(5) =240a(6) =759a(7) =2365a(8) =7369a(9) =23069a(10) =72495a(11) =228186a(12) =718341a(13) =2260566a(14) =7111650a(15) =22370236a(16) =70367607a(17) =221357774a(18) =696358788a(19) =2190680327a(20) =6891703804a(21) =21680712093a(22) =68205549672a(23) =214568342539a(24) =675012376279