Triangle read by rows: T(n,k) is the number of ascent sequences of length n with first occurrence of the maximal value at position k-1.
A218580
Triangle read by rows: T(n,k) is the number of ascent sequences of length n with first occurrence of the maximal value at position k-1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =1a(7) =4a(8) =5a(9) =5a(10) =1a(11) =8a(12) =13a(13) =15a(14) =16a(15) =1a(16) =16a(17) =35a(18) =47a(19) =56a(20) =62a(21) =1a(22) =32a(23) =97a(24) =153a(25) =204a(26) =248a(27) =279a(28) =1a(29) =64
External references
- oeis: A218580