Number of sets of nonempty words with a total of n letters over denary alphabet containing the tenth letter such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
A293891
Number of sets of nonempty words with a total of n letters over denary alphabet containing the tenth 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) =11a(2) =121a(3) =992a(4) =7948a(5) =57368a(6) =407495a(7) =2762306a(8) =18558261a(9) =121903562a(10) =797628339a(11) =5164110575a(12) =33416303576a(13) =215354872472
External references
- oeis: A293891