Number of parking functions of size n avoiding the patterns 213 and 321.

A362596

Number of parking functions of size n avoiding the patterns 213 and 321.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =13a(4) =60a(5) =275a(6) =1238a(7) =5480a(8) =23922a(9) =103267a(10) =441798a(11) =1876366a(12) =7921488a(13) =33275758a(14) =139194812a(15) =580180598a(16) =2410827422a(17) =9990993443a(18) =41308185542a(19) =170439003998a(20) =701953309592

External references