Number of words of length n over an alphabet of size 5 which do not contain a run of 5 identical letters.
A188580
Number of words of length n over an alphabet of size 5 which do not contain a run of 5 identical letters.
Terms
- a(0) =1a(1) =5a(2) =25a(3) =125a(4) =625a(5) =3120a(6) =15580a(7) =77800a(8) =388500a(9) =1940000a(10) =9687520a(11) =48375280a(12) =241565200a(13) =1206272000a(14) =6023600000a(15) =30079249920a(16) =150202748480a(17) =750047481600
External references
- oeis: A188580