Number of n-length words w over a 4-ary alphabet {a1,a2,...,a4} such that #(w,a1) >= #(w,a2) >= ... >= #(w,a4) >= 1, where #(w,x) counts the letters x in word w.
A226883
Number of n-length words w over a 4-ary alphabet {a1,a2,...,a4} such that #(w,a1) >= #(w,a2) >= ... >= #(w,a4) >= 1, where #(w,x) counts the letters x in word w.
Terms
- a(0) =24a(1) =60a(2) =300a(3) =1260a(4) =6496a(5) =20916a(6) =95640a(7) =353760a(8) =1600104a(9) =5626764a(10) =23844002a(11) =88442445a(12) =387629456a(13) =1389902524a(14) =5788974504a(15) =21752247660a(16) =93252286444a(17) =340374221376
External references
- oeis: A226883