Triangle read by rows: T(n,k) is number of Grand Motzkin paths of length n having k returns to the x-axis from above (i.e., d steps hitting the x-axis).
A109195
Triangle read by rows: T(n,k) is number of Grand Motzkin paths of length n having k returns to the x-axis from above (i.e., d steps hitting the x-axis).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =4a(5) =3a(6) =9a(7) =9a(8) =1a(9) =21a(10) =25a(11) =5a(12) =51a(13) =69a(14) =20a(15) =1a(16) =127a(17) =189a(18) =70a(19) =7a(20) =323a(21) =518a(22) =230a(23) =35a(24) =1a(25) =835a(26) =1422a(27) =726a(28) =147a(29) =9
External references
- oeis: A109195