Number of relatively prime Lyndon compositions (aperiodic necklaces of positive integers) with sum n.

A318731

Number of relatively prime Lyndon compositions (aperiodic necklaces of positive integers) with sum n.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =2a(4) =5a(5) =7a(6) =17a(7) =27a(8) =54a(9) =93a(10) =185a(11) =324a(12) =629a(13) =1143a(14) =2175a(15) =4050a(16) =7709a(17) =14469a(18) =27593a(19) =52276a(20) =99839a(21) =190371a(22) =364721a(23) =698508a(24) =1342170a(25) =2580165a(26) =4970952a(27) =9585232a(28) =18512789a(29) =35787985

External references