Number of inversion sequences of length n avoiding the consecutive patterns 012, 101, 102, and 201.
A328429
Number of inversion sequences of length n avoiding the consecutive patterns 012, 101, 102, and 201.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =46a(6) =170a(7) =691a(8) =3073a(9) =14809a(10) =76666a(11) =423886a(12) =2490514a(13) =15479614a(14) =101389508a(15) =697513653a(16) =5025406212a(17) =37819960947a(18) =296618360520
External references
- oeis: A328429