Number of Lyndon compositions (aperiodic necklaces of positive integers) with sum n and adjacent parts (including the last with the first part) being coprime.

A318745

Number of Lyndon compositions (aperiodic necklaces of positive integers) with sum n and adjacent parts (including the last with the first part) being coprime.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =7a(6) =12a(7) =19a(8) =32a(9) =53a(10) =94a(11) =158a(12) =279a(13) =480a(14) =847a(15) =1487a(16) =2647a(17) =4676a(18) =8349a(19) =14865a(20) =26630a(21) =47700a(22) =85778a(23) =154290a(24) =278318a(25) =502437a(26) =908880a(27) =1645713a(28) =2984546a(29) =5417743

External references