Total number of sets of k words of length k over binary alphabet with exactly n occurrences of the first letter in the set, summed over all k >= 0.
A360695
Total number of sets of k words of length k over binary alphabet with exactly n occurrences of the first letter in the set, summed over all k >= 0.
Terms
- a(0) =2a(1) =3a(2) =5a(3) =16a(4) =57a(5) =230a(6) =1071a(7) =5429a(8) =29810a(9) =175718a(10) =1101090a(11) =7294593a(12) =50829712a(13) =370975443a(14) =2826022446a(15) =22403032310a(16) =184339146428
External references
- oeis: A360695