A(n,k) for n >= k in triangular ordering, where A(n,k) is the number of compositions (ordered partitions) of n into k parts, with the first part greater than or equal to all other parts.
A156042
A(n,k) for n >= k in triangular ordering, where A(n,k) is the number of compositions (ordered partitions) of n into k parts, with the first part greater than or equal to all other parts.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =2a(5) =4a(6) =1a(7) =3a(8) =6a(9) =11a(10) =1a(11) =3a(12) =8a(13) =17a(14) =32a(15) =1a(16) =4a(17) =11a(18) =26a(19) =54a(20) =102a(21) =1a(22) =4a(23) =13a(24) =35a(25) =82a(26) =172a(27) =331a(28) =1a(29) =5
External references
- oeis: A156042