A070736 - cp's OEIS frontend

A070736 Let r, s, t, u be four permutations of the set { 1, 2, 3, ..., n }; a(n) = minimal value of Sum_{i=1..n} r(i)s(i)t(i)*u(i).

n	a(n)
1	1
2	8
3	33
4	96
5	231
6	484
7	915
8	1608
9	2664
10	4208
11	6392
12	9392
13	13418
14	18706
15	25540
16	34224
17	45108
18	58588
19	75101
20	95120
21	119179
22	147856
23	181786
24	221648
25	268195
26	322220
27	384588
28	456232
29	538138
30	631362
31	737052
32	856396
33	990684
34	1141254
35	1309568
36	1497104
37	1705508
38	1936416
39	2191700
40	2473248
41	2783030

[1, 8, 33, 96, 231, 484, 915, 1608, 2664, 4208, 6392, 9392, 13418, 18706, 25540, 34224, 45108, 58588, 75101, 95120, 119179, 147856, 181786, 221648, 268195, 322220, 384588, 456232, 538138, 631362, 737052, 856396, 990684, 1141254, 1309568, 1497104, 1705508, 1936416, 2191700, 2473248, 2783030]

cp's OEIS Frontend

A070736 Let r, s, t, u be four permutations of the set { 1, 2, 3, ..., n }; a(n) = minimal value of Sum_{i=1..n} r(i)s(i)t(i)*u(i).

Table of values

List of values

cp's OEIS Frontend

A070736 Let r, s, t, u be four permutations of the set { 1, 2, 3, ..., n }; a(n) = minimal value of Sum_{i=1..n} r(i)*s(i)*t(i)*u(i).

Table of values

List of values

A070736 Let r, s, t, u be four permutations of the set { 1, 2, 3, ..., n }; a(n) = minimal value of Sum_{i=1..n} r(i)s(i)t(i)*u(i).