Number T(n,k) of isoscent sequences of length n with exactly k ascents; triangle T(n,k), n>=0, 0<=k<=n+3-ceiling(2*sqrt(n+2)), read by rows.
A242351
Number T(n,k) of isoscent sequences of length n with exactly k ascents; triangle T(n,k), n>=0, 0<=k<=n+3-ceiling(2*sqrt(n+2)), read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =4a(6) =1a(7) =11a(8) =3a(9) =1a(10) =26a(11) =25a(12) =1a(13) =57a(14) =128a(15) =17a(16) =1a(17) =120a(18) =525a(19) =229a(20) =2a(21) =1a(22) =247a(23) =1901a(24) =1819a(25) =172a(26) =1a(27) =502a(28) =6371a(29) =11172
External references
- oeis: A242351