A343520 - cp's OEIS frontend

A343520 a(n) = Sum_{1 <= x_1 <= x_2 <= x_3 <= x_4 <= x_5 <= x_6 <= n} gcd(x_1, x_2, x_3 , x_4, x_5, x_6, n).

n	a(n)
1	1
2	8
3	30
4	93
5	214
6	506
7	930
8	1818
9	3065
10	5247
11	8018
12	13080
13	18576
14	28104
15	39300
16	56184
17	74629
18	104978
19	134614
20	182897
21	232258
22	304098
23	376762
24	492068
25	594635
26	754941
27	912384
28	1137106
29	1344932
30	1674374
31	1947822
32	2382888
33	2776997
34	3337364
35	3843360
36	4629687
37	5245822
38	6231194

[1, 8, 30, 93, 214, 506, 930, 1818, 3065, 5247, 8018, 13080, 18576, 28104, 39300, 56184, 74629, 104978, 134614, 182897, 232258, 304098, 376762, 492068, 594635, 754941, 912384, 1137106, 1344932, 1674374, 1947822, 2382888, 2776997, 3337364, 3843360, 4629687, 5245822, 6231194]

cp's OEIS Frontend

A343520 a(n) = Sum_{1 <= x_1 <= x_2 <= x_3 <= x_4 <= x_5 <= x_6 <= n} gcd(x_1, x_2, x_3 , x_4, x_5, x_6, n).

Table of values

List of values