Number of multisets of nonempty words with a total of n letters over binary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
A293732
Number of multisets of nonempty words with a total of n letters over binary 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) =1a(2) =3a(3) =6a(4) =15a(5) =31a(6) =73a(7) =155a(8) =351a(9) =755a(10) =1673a(11) =3604a(12) =7897a(13) =16988a(14) =36902a(15) =79222a(16) =171030a(17) =366180a(18) =786746a(19) =1679976a(20) =3595207a(21) =7657631a(22) =16332935a(23) =34706319a(24) =73812099a(25) =156503351a(26) =332004423a(27) =702533059a(28) =1486998780a(29) =3140716766
External references
- oeis: A293732