Number of Sommerville symmetrical cyclic compositions (on symmetric necklaces) of n that are Carlitz (adjacent parts on the circle are distinct).

A292200

Number of Sommerville symmetrical cyclic compositions (on symmetric necklaces) of n that are Carlitz (adjacent parts on the circle are distinct).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =2a(4) =3a(5) =4a(6) =5a(7) =7a(8) =10a(9) =11a(10) =16a(11) =23a(12) =27a(13) =37a(14) =51a(15) =65a(16) =86a(17) =117a(18) =148a(19) =204a(20) =267a(21) =351a(22) =461a(23) =626a(24) =803a(25) =1088a(26) =1419a(27) =1899a(28) =2473a(29) =3341

External references