Number of inversion sequences of length n avoiding the consecutive patterns 101, 102, 201, and 210.
A328434
Number of inversion sequences of length n avoiding the consecutive patterns 101, 102, 201, and 210.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =21a(5) =81a(6) =346a(7) =1630a(8) =8350a(9) =45958a(10) =269815a(11) =1681285a(12) =11071336a(13) =76743040a(14) =558062437a(15) =4244853573a(16) =33687390663a(17) =278296576327
External references
- oeis: A328434