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

A318747

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =3a(7) =2a(8) =3a(9) =5a(10) =5a(11) =8a(12) =7a(13) =12a(14) =14a(15) =20a(16) =31a(17) =37a(18) =51a(19) =64a(20) =96a(21) =129a(22) =177a(23) =246a(24) =328a(25) =465a(26) =630a(27) =889a(28) =1230a(29) =1692

External references