Triangle read by rows: T(n,k) is the number of ascent sequences of length n with last zero at position k-1.
A218579
Triangle read by rows: T(n,k) is the number of ascent sequences of length n with last zero at position k-1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =2a(6) =5a(7) =2a(8) =3a(9) =5a(10) =15a(11) =5a(12) =8a(13) =10a(14) =15a(15) =53a(16) =15a(17) =26a(18) =32a(19) =38a(20) =53a(21) =217a(22) =53a(23) =99a(24) =122a(25) =142a(26) =164a(27) =217a(28) =1014a(29) =217
External references
- oeis: A218579