Irregular triangle read by rows: T(n,k) is the number of compositions of n such that the maximal cardinality of C is k, where C is a subset of the set of parts such that all elements in C appear in weakly increasing order within the composition.
A386891
Irregular triangle read by rows: T(n,k) is the number of compositions of n such that the maximal cardinality of C is k, where C is a subset of the set of parts such that all elements in C appear in weakly increasing order within the composition.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =2a(5) =0a(6) =3a(7) =1a(8) =0a(9) =6a(10) =2a(11) =0a(12) =11a(13) =5a(14) =0a(15) =21a(16) =10a(17) =1a(18) =0a(19) =39a(20) =23a(21) =2a(22) =0a(23) =74a(24) =49a(25) =5a(26) =0a(27) =139a(28) =107a(29) =10
External references
- oeis: A386891