Number of primitive non-Dyck factors in all skew Dyck paths of semilength n.

A129158

Number of primitive non-Dyck factors in all skew Dyck paths of semilength n.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =5a(4) =22a(5) =96a(6) =422a(7) =1871a(8) =8360a(9) =37610a(10) =170222a(11) =774561a(12) =3541487a(13) =16263250a(14) =74981226a(15) =346957923a(16) =1610847944a(17) =7501970397a(18) =35038158569a(19) =164083453482a(20) =770312822822

External references