Number of 5-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero with no three beads in a row equal.

A208947

Number of 5-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero with no three beads in a row equal.

Terms

    a(0) =8a(1) =68a(2) =274a(3) =766a(4) =1722a(5) =3376a(6) =6004a(7) =9928a(8) =15514a(9) =23178a(10) =33378a(11) =46624a(12) =63464a(13) =84496a(14) =110366a(15) =141766a(16) =179426a(17) =224132a(18) =276712a(19) =338040a(20) =409034a(21) =490662a(22) =583934a(23) =689912a(24) =809696a(25) =944436a(26) =1095330a(27) =1263622a(28) =1450594a(29) =1657584

External references