A372929 - cp's OEIS frontend

A372929 a(n) = Sum_{1 <= x_1, x_2, x_3 <= n} gcd(x_1, x_2, x_3, n)^4.

n	a(n)
1	1
2	23
3	107
4	424
5	749
6	2461
7	2743
8	7232
9	9369
10	17227
11	15971
12	45368
13	30757
14	63089
15	80143
16	119296
17	88433
18	215487
19	137179
20	317576
21	293501
22	367333
23	292007
24	773824
25	483625
26	707411
27	777843
28	1163032
29	731669
30	1843289
31	953311
32	1937408
33	1708897
34	2033959
35	2054507
36	3972456

[1, 23, 107, 424, 749, 2461, 2743, 7232, 9369, 17227, 15971, 45368, 30757, 63089, 80143, 119296, 88433, 215487, 137179, 317576, 293501, 367333, 292007, 773824, 483625, 707411, 777843, 1163032, 731669, 1843289, 953311, 1937408, 1708897, 2033959, 2054507, 3972456]

cp's OEIS Frontend

A372929 a(n) = Sum_{1 <= x_1, x_2, x_3 <= n} gcd(x_1, x_2, x_3, n)^4.

Table of values

List of values