Number of 5-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero and avoiding the pattern z z+1 z+2.

A209074

Number of 5-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero and avoiding the pattern z z+1 z+2.

Terms

    a(0) =8a(1) =70a(2) =276a(3) =766a(4) =1722a(5) =3378a(6) =6006a(7) =9928a(8) =15514a(9) =23180a(10) =33380a(11) =46624a(12) =63464a(13) =84498a(14) =110368a(15) =141766a(16) =179426a(17) =224134a(18) =276714a(19) =338040a(20) =409034a(21) =490664a(22) =583936a(23) =689912a(24) =809696a(25) =944438a(26) =1095332a(27) =1263622a(28) =1450594a(29) =1657586

External references