Number of integer compositions of n in which runs of 1's all have length <= 1, runs of 2's all have length <= 2, runs of 3's all have length <= 3, etc.
A389510
Number of integer compositions of n in which runs of 1's all have length <= 1, runs of 2's all have length <= 2, runs of 3's all have length <= 3, etc.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =5a(5) =9a(6) =16a(7) =29a(8) =55a(9) =99a(10) =179a(11) =329a(12) =598a(13) =1090a(14) =1990a(15) =3626a(16) =6614a(17) =12060a(18) =21988a(19) =40100a(20) =73114a(21) =133316a(22) =243105a(23) =443280a(24) =808295a(25) =1473885a(26) =2687535a(27) =4900577a(28) =8935910a(29) =16294100
External references
- oeis: A389510