A340179 - cp's OEIS frontend

A340179 a(n) = Sum_{x in C(n)} (A023896(n) mod x), where C(n) is the set of numbers < n coprime to n, and A023896(n) is the sum of C(n).

n	a(n)
1	0
2	0
3	1
4	1
5	3
6	1
7	6
8	4
9	15
10	10
11	25
12	9
13	33
14	20
15	25
16	32
17	49
18	24
19	56
20	34
21	68
22	48
23	98
24	35
25	152
26	54
27	100
28	89
29	180
30	30
31	178
32	91
33	146
34	146
35	150
36	115
37	314
38	160
39	220
40	166
41	315
42	120
43	306
44	211
45	267
46	254
47	412
48	196
49	485
50	224
51	383
52	339
53	600
54	243
55	609
56	306
57	481
58	419
59	801
60	215
61	859
62	490
63	577
64	567
65	782
66	297
67	865

[0, 0, 1, 1, 3, 1, 6, 4, 15, 10, 25, 9, 33, 20, 25, 32, 49, 24, 56, 34, 68, 48, 98, 35, 152, 54, 100, 89, 180, 30, 178, 91, 146, 146, 150, 115, 314, 160, 220, 166, 315, 120, 306, 211, 267, 254, 412, 196, 485, 224, 383, 339, 600, 243, 609, 306, 481, 419, 801, 215, 859, 490, 577, 567, 782, 297, 865]

cp's OEIS Frontend

A340179 a(n) = Sum_{x in C(n)} (A023896(n) mod x), where C(n) is the set of numbers < n coprime to n, and A023896(n) is the sum of C(n).

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	1
5	3
6	1
7	6
8	4
9	15
10	10
11	25
12	9
13	33
14	20
15	25
16	32
17	49
18	24
19	56
20	34
21	68
22	48
23	98
24	35
25	152
26	54
27	100
28	89
29	180
30	30
31	178
32	91
33	146
34	146
35	150
36	115
37	314
38	160
39	220
40	166
41	315
42	120
43	306
44	211
45	267
46	254
47	412
48	196
49	485
50	224
51	383
52	339
53	600
54	243
55	609
56	306
57	481
58	419
59	801
60	215
61	859
62	490
63	577
64	567
65	782
66	297
67	865

n	a(n)
1	0
2	0
3	1
4	1
5	3
6	1
7	6
8	4
9	15
10	10
11	25
12	9
13	33
14	20
15	25
16	32
17	49
18	24
19	56
20	34
21	68
22	48
23	98
24	35
25	152
26	54
27	100
28	89
29	180
30	30
31	178
32	91
33	146
34	146
35	150
36	115
37	314
38	160
39	220
40	166
41	315
42	120
43	306
44	211
45	267
46	254
47	412
48	196
49	485
50	224
51	383
52	339
53	600
54	243
55	609
56	306
57	481
58	419
59	801
60	215
61	859
62	490
63	577
64	567
65	782
66	297
67	865

n	a(n)
1	0
2	0
3	1
4	1
5	3
6	1
7	6
8	4
9	15
10	10
11	25
12	9
13	33
14	20
15	25
16	32
17	49
18	24
19	56
20	34
21	68
22	48
23	98
24	35
25	152
26	54
27	100
28	89
29	180
30	30
31	178
32	91
33	146
34	146
35	150
36	115
37	314
38	160
39	220
40	166
41	315
42	120
43	306
44	211
45	267
46	254
47	412
48	196
49	485
50	224
51	383
52	339
53	600
54	243
55	609
56	306
57	481
58	419
59	801
60	215
61	859
62	490
63	577
64	567
65	782
66	297
67	865