Cyclically smooth Lyndon words with 4 colors.

Terms

a(0) =4a(1) =3a(2) =6a(3) =11a(4) =26a(5) =52a(6) =124a(7) =275a(8) =648a(9) =1511a(10) =3618a(11) =8635a(12) =20920a(13) =50758a(14) =124114a(15) =304425a(16) =750330a(17) =1854716a(18) =4600692a(19) =11441298a(20) =28528484a(21) =71290791a(22) =178529666a(23) =447914775a(24) =1125756830a(25) =2833896220a(26) =7144466184a(27) =18036398490a(28) =45591671450a(29) =115381759707