A281908 - cp's OEIS frontend

A281908 a(n) = (Sum_{k=1..n} C(n,k) mod k) mod n.

n	a(n)
1	0
2	1
3	2
4	2
5	3
6	2
7	2
8	3
9	6
10	3
11	3
12	2
13	1
14	0
15	2
16	14
17	13
18	13
19	12
20	8
21	18
22	16
23	14
24	20
25	2
26	23
27	24
28	21
29	19
30	22
31	19
32	15
33	21
34	2
35	25
36	6
37	1
38	26
39	25
40	38
41	33
42	4
43	42
44	19
45	34
46	19
47	14
48	38
49	31
50	18
51	22
52	20
53	14
54	42
55	29
56	13
57	9
58	44
59	38
60	39
61	31
62	9
63	4
64	9
65	25
66	7
67	63
68	22
69	2
70	17
71	7
72	38
73	27
74	44
75	25

[0, 1, 2, 2, 3, 2, 2, 3, 6, 3, 3, 2, 1, 0, 2, 14, 13, 13, 12, 8, 18, 16, 14, 20, 2, 23, 24, 21, 19, 22, 19, 15, 21, 2, 25, 6, 1, 26, 25, 38, 33, 4, 42, 19, 34, 19, 14, 38, 31, 18, 22, 20, 14, 42, 29, 13, 9, 44, 38, 39, 31, 9, 4, 9, 25, 7, 63, 22, 2, 17, 7, 38, 27, 44, 25]

cp's OEIS Frontend

A281908 a(n) = (Sum_{k=1..n} C(n,k) mod k) mod n.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	2
5	3
6	2
7	2
8	3
9	6
10	3
11	3
12	2
13	1
14	0
15	2
16	14
17	13
18	13
19	12
20	8
21	18
22	16
23	14
24	20
25	2
26	23
27	24
28	21
29	19
30	22
31	19
32	15
33	21
34	2
35	25
36	6
37	1
38	26
39	25
40	38
41	33
42	4
43	42
44	19
45	34
46	19
47	14
48	38
49	31
50	18
51	22
52	20
53	14
54	42
55	29
56	13
57	9
58	44
59	38
60	39
61	31
62	9
63	4
64	9
65	25
66	7
67	63
68	22
69	2
70	17
71	7
72	38
73	27
74	44
75	25

n	a(n)
1	0
2	1
3	2
4	2
5	3
6	2
7	2
8	3
9	6
10	3
11	3
12	2
13	1
14	0
15	2
16	14
17	13
18	13
19	12
20	8
21	18
22	16
23	14
24	20
25	2
26	23
27	24
28	21
29	19
30	22
31	19
32	15
33	21
34	2
35	25
36	6
37	1
38	26
39	25
40	38
41	33
42	4
43	42
44	19
45	34
46	19
47	14
48	38
49	31
50	18
51	22
52	20
53	14
54	42
55	29
56	13
57	9
58	44
59	38
60	39
61	31
62	9
63	4
64	9
65	25
66	7
67	63
68	22
69	2
70	17
71	7
72	38
73	27
74	44
75	25

n	a(n)
1	0
2	1
3	2
4	2
5	3
6	2
7	2
8	3
9	6
10	3
11	3
12	2
13	1
14	0
15	2
16	14
17	13
18	13
19	12
20	8
21	18
22	16
23	14
24	20
25	2
26	23
27	24
28	21
29	19
30	22
31	19
32	15
33	21
34	2
35	25
36	6
37	1
38	26
39	25
40	38
41	33
42	4
43	42
44	19
45	34
46	19
47	14
48	38
49	31
50	18
51	22
52	20
53	14
54	42
55	29
56	13
57	9
58	44
59	38
60	39
61	31
62	9
63	4
64	9
65	25
66	7
67	63
68	22
69	2
70	17
71	7
72	38
73	27
74	44
75	25