Number of 7-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero with no three beads in a row equal.

A208949

Number of 7-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero with no three beads in a row equal.

Terms

    a(0) =38a(1) =988a(2) =7974a(3) =37044a(4) =125322a(5) =344456a(6) =817362a(7) =1738516a(8) =3397474a(9) =6205668a(10) =10726862a(11) =17710724a(12) =28129694a(13) =43219580a(14) =64523202a(15) =93937312a(16) =133763354a(17) =186761160a(18) =256205942a(19) =345949192a(20) =460482450a(21) =605004348a(22) =785491674a(23) =1008773192a(24) =1282606758

External references