A260358 a(n) is the minimal value of Sum_{i=1..n} Product_{j=1..7} r_j(i), where each r_j is a permutation of {1,2,...,n}.

1, 24, 198, 1043, 4074

Offset: 1

Author

Chai Wah Wu, Jul 28 2015

Keywords

• nonn
• more

Comments

See arXiv link for sets of permutations that achieve the value of a(n).

Links

• Chai Wah Wu, Permutations r_j such that ∑i∏j r_j(i) is maximized or minimized. arXiv:1508.02934 [math.CO], 2015.

Crossrefs

Cf. A000292 (two permutations), A070735 (three permutations), A070736 (four permutations), A260356 (five permutations), A260357 (six permutations), A260359 (eight permutations), A260355.