A050184 T(2n+6,n), array T as in A051168; a count of Lyndon words.
0, 1, 4, 18, 70, 273, 1026, 3876, 14520, 54477, 204248, 766935, 2882934, 10855425, 40939888, 154663938, 585260496, 2218309470, 8421352956, 32018897274, 121918083980, 464879984481, 1774996216144, 6785967883800
Offset: 0