Number of multisets of exactly seven nonempty words with a total of n letters over n-ary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
A294009
Number of multisets of exactly seven nonempty words with a total of n letters over n-ary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =22a(4) =73a(5) =240a(6) =818a(7) =2824a(8) =9995a(9) =36210a(10) =134397a(11) =511802a(12) =1999360a(13) =8023808a(14) =33066865a(15) =140066840a(16) =609466485a(17) =2725084766a(18) =12510393090a(19) =58957378290a(20) =284932585092
External references
- oeis: A294009