Number of n-length words over a 6-ary alphabet {a_1,a_2,...,a_6} avoiding consecutive letters a_i, a_{i+1}.
A277669
Number of n-length words over a 6-ary alphabet {a_1,a_2,...,a_6} avoiding consecutive letters a_i, a_{i+1}.
Terms
- a(0) =1a(1) =6a(2) =31a(3) =160a(4) =826a(5) =4264a(6) =22012a(7) =113632a(8) =586599a(9) =3028182a(10) =15632291a(11) =80698096a(12) =416585304a(13) =2150525528a(14) =11101591924a(15) =57309407232a(16) =295846593873
External references
- oeis: A277669