Number T(n,k) of isoscent sequences of length n with exactly k descents; triangle T(n,k), n>=0, 0<=k<=n+2-ceiling(2*sqrt(n+1)), read by rows.
A242352
Number T(n,k) of isoscent sequences of length n with exactly k descents; triangle T(n,k), n>=0, 0<=k<=n+2-ceiling(2*sqrt(n+1)), read by rows.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =1a(5) =9a(6) =6a(7) =21a(8) =29a(9) =2a(10) =51a(11) =124a(12) =28a(13) =127a(14) =499a(15) =241a(16) =10a(17) =323a(18) =1933a(19) =1667a(20) =216a(21) =1a(22) =835a(23) =7307a(24) =10142a(25) =2765a(26) =98a(27) =2188a(28) =27166a(29) =56748
External references
- oeis: A242352