Minimal value of sum(p(i)p(i+1),i=1..n), where p(n+1)=p(1), as p ranges over all permutations of {1,2,...,n}.

A110611

Minimal value of sum(p(i)p(i+1),i=1..n), where p(n+1)=p(1), as p ranges over all permutations of {1,2,...,n}.

Terms

    a(0) =1a(1) =4a(2) =11a(3) =21a(4) =37a(5) =58a(6) =87a(7) =123a(8) =169a(9) =224a(10) =291a(11) =369a(12) =461a(13) =566a(14) =687a(15) =823a(16) =977a(17) =1148a(18) =1339a(19) =1549a(20) =1781a(21) =2034a(22) =2311a(23) =2611a(24) =2937a(25) =3288a(26) =3667a(27) =4073a(28) =4509a(29) =4974

External references