Number of multisets of nonempty words with a total of n letters over octonary alphabet containing the eighth letter such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
A293803
Number of multisets of nonempty words with a total of n letters over octonary alphabet containing the eighth letter 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) =9a(2) =82a(3) =563a(4) =3807a(5) =23376a(6) =142085a(7) =829038a(8) =4816390a(9) =27477989a(10) =156716051a(11) =887263747a(12) =5034299169a(13) =28513927121a(14) =162089445027a(15) =922536360293
External references
- oeis: A293803