Number of length n words on alphabet {0,1,2,3} which contain all 16 of the 2-letter strings of the alphabet.
A244044
Number of length n words on alphabet {0,1,2,3} which contain all 16 of the 2-letter strings of the alphabet.
Terms
- a(0) =331776a(1) =5806080a(2) =69672960a(3) =675578880a(4) =5675235840a(5) =42832800000a(6) =297267224832
External references
- oeis: A244044