Number T(n,k) of compositions of n such that k is the minimal distance between two identical parts; triangle T(n,k), n>=2, 1<=k<=floor((sqrt(8*n-7)-1)/2), read by rows.
A261981
Number T(n,k) of compositions of n such that k is the minimal distance between two identical parts; triangle T(n,k), n>=2, 1<=k<=floor((sqrt(8*n-7)-1)/2), read by rows.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =1a(4) =9a(5) =2a(6) =18a(7) =3a(8) =41a(9) =8a(10) =2a(11) =89a(12) =16a(13) =4a(14) =185a(15) =34a(16) =10a(17) =388a(18) =57a(19) =10a(20) =810a(21) =113a(22) =30a(23) =6a(24) =1670a(25) =213a(26) =52a(27) =12a(28) =3435a(29) =396
External references
- oeis: A261981