Number of n-length words w over a 7-ary alphabet {a1,a2,...,a7} such that #(w,a1) >= #(w,a2) >= ... >= #(w,a7) >= 0, where #(w,x) counts the letters x in word w.
A226877
Number of n-length words w over a 7-ary alphabet {a1,a2,...,a7} such that #(w,a1) >= #(w,a2) >= ... >= #(w,a7) >= 0, where #(w,x) counts the letters x in word w.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =10a(4) =47a(5) =246a(6) =1602a(7) =11481a(8) =55183a(9) =326710a(10) =1924358a(11) =11843151a(12) =76569242a(13) =494393147a(14) =3419744681a(15) =20455085475a(16) =133157018303a(17) =860006815622
External references
- oeis: A226877