Number of multisets of nonempty words with a total of n letters over senary alphabet containing the sixth letter such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
A293801
Number of multisets of nonempty words with a total of n letters over senary alphabet containing the sixth 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) =7a(2) =50a(3) =275a(4) =1500a(5) =7517a(6) =37481a(7) =180552a(8) =868974a(9) =4120598a(10) =19574576a(11) =92438492a(12) =437977946a(13) =2072100450a(14) =9843499790a(15) =46801485700a(16) =223513049582
External references
- oeis: A293801