Number A(n,k) of compositions of n where each part i is marked with a word of length i over a k-ary alphabet whose letters appear in alphabetical order; square array A(n,k), n>=0, k>=0, read by antidiagonals.
A261780
Number A(n,k) of compositions of n where each part i is marked with a word of length i over a k-ary alphabet whose letters appear in alphabetical order; square array A(n,k), n>=0, k>=0, read by antidiagonals.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =1a(5) =0a(6) =1a(7) =2a(8) =2a(9) =0a(10) =1a(11) =3a(12) =7a(13) =4a(14) =0a(15) =1a(16) =4a(17) =15a(18) =24a(19) =8a(20) =0a(21) =1a(22) =5a(23) =26a(24) =73a(25) =82a(26) =16a(27) =0a(28) =1a(29) =6
External references
- oeis: A261780