Smooth Lyndon words with 7 colors.

Terms

a(0) =1a(1) =7a(2) =6a(3) =17a(4) =42a(5) =119a(6) =305a(7) =829a(8) =2196a(9) =5907a(10) =15863a(11) =42842a(12) =115845a(13) =314368a(14) =854647a(15) =2329087a(16) =6358855a(17) =17393327a(18) =47652117a(19) =130752969a(20) =359270784a(21) =988458115a(22) =2722792878