Triangle read by rows: T(n,k) is the number of secondary structures of size n (n>=0) having k stacks of length 1 (k>=0).
A202838
Triangle read by rows: T(n,k) is the number of secondary structures of size n (n>=0) having k stacks of length 1 (k>=0).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =2a(8) =6a(9) =4a(10) =10a(11) =3a(12) =8a(13) =15a(14) =14a(15) =14a(16) =27a(17) =40a(18) =1a(19) =23a(20) =56a(21) =90a(22) =16a(23) =38a(24) =122a(25) =178a(26) =85a(27) =65a(28) =253a(29) =356
External references
- oeis: A202838