Let r, s, t be three permutations of the set { 1, 2, 3, ..., n }; a(n) = minimal value of Sum_{i=1..n} r(i)*s(i)*t(i).

A070735

Let r, s, t be three permutations of the set { 1, 2, 3, ..., n }; a(n) = minimal value of Sum_{i=1..n} r(i)*s(i)*t(i).

Terms

    a(0) =1a(1) =6a(2) =18a(3) =44a(4) =89a(5) =162a(6) =271a(7) =428a(8) =642a(9) =930a(10) =1304a(11) =1781a(12) =2377a(13) =3111a(14) =4002a(15) =5073a(16) =6344a(17) =7842a(18) =9587a(19) =11610a(20) =13933a(21) =16591a(22) =19612a(23) =23028a(24) =26871a(25) =31177a(26) =35976a(27) =41314a(28) =47221a(29) =53736

External references