Number of length n inversion sequences avoiding the patterns 000 and 010.
A279552
Number of length n inversion sequences avoiding the patterns 000 and 010.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =29a(6) =95a(7) =345a(8) =1376a(9) =5966a(10) =27886a(11) =139608a(12) =744552a(13) =4210191a(14) =25140790a(15) =157981820a(16) =1041480482a(17) =7183374125a(18) =51711299169a(19) =387683162541
External references
- oeis: A279552