Number of length n inversion sequences avoiding the patterns 010, 110, and 120.
A279556
Number of length n inversion sequences avoiding the patterns 010, 110, and 120.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =51a(6) =190a(7) =759a(8) =3206a(9) =14180a(10) =65203a(11) =309998a(12) =1517330a(13) =7619541a(14) =39145113a(15) =205261890a(16) =1096393056a(17) =5955598301a(18) =32852080738a(19) =183797522935
External references
- oeis: A279556