A174875 - cp's OEIS frontend

A174875 Triangle read by rows: T(n,k) = sigma(n) mod tau(k), where sigma(.) is the sum of divisors and tau(.) is the number of divisors.

n	a(n)
1	0
2	0
3	1
4	0
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	2
26	0
27	0
28	0
29	0
30	1
31	1
32	0
33	1
34	3
35	1
36	3
37	0
38	1
39	1
40	1
41	1
42	1
43	1
44	1
45	1
46	0
47	0
48	0
49	0
50	0
51	2
52	0
53	2
54	0
55	2
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	1
71	0
72	0
73	0
74	0
75	1
76	0
77	0
78	4
79	0
80	0
81	0
82	2
83	0
84	2
85	0
86	2
87	2
88	2
89	0
90	2
91	0
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	0

[0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 1, 1, 0, 1, 3, 1, 3, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 2, 0, 2, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 4, 0, 0, 0, 2, 0, 2, 0, 2, 2, 2, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A174875 Triangle read by rows: T(n,k) = sigma(n) mod tau(k), where sigma(.) is the sum of divisors and tau(.) is the number of divisors.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	2
26	0
27	0
28	0
29	0
30	1
31	1
32	0
33	1
34	3
35	1
36	3
37	0
38	1
39	1
40	1
41	1
42	1
43	1
44	1
45	1
46	0
47	0
48	0
49	0
50	0
51	2
52	0
53	2
54	0
55	2
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	1
71	0
72	0
73	0
74	0
75	1
76	0
77	0
78	4
79	0
80	0
81	0
82	2
83	0
84	2
85	0
86	2
87	2
88	2
89	0
90	2
91	0
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	0

n	a(n)
1	0
2	0
3	1
4	0
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	2
26	0
27	0
28	0
29	0
30	1
31	1
32	0
33	1
34	3
35	1
36	3
37	0
38	1
39	1
40	1
41	1
42	1
43	1
44	1
45	1
46	0
47	0
48	0
49	0
50	0
51	2
52	0
53	2
54	0
55	2
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	1
71	0
72	0
73	0
74	0
75	1
76	0
77	0
78	4
79	0
80	0
81	0
82	2
83	0
84	2
85	0
86	2
87	2
88	2
89	0
90	2
91	0
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	0

n	a(n)
1	0
2	0
3	1
4	0
5	0
6	0
7	0
8	1
9	1
10	1
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	2
26	0
27	0
28	0
29	0
30	1
31	1
32	0
33	1
34	3
35	1
36	3
37	0
38	1
39	1
40	1
41	1
42	1
43	1
44	1
45	1
46	0
47	0
48	0
49	0
50	0
51	2
52	0
53	2
54	0
55	2
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	1
71	0
72	0
73	0
74	0
75	1
76	0
77	0
78	4
79	0
80	0
81	0
82	2
83	0
84	2
85	0
86	2
87	2
88	2
89	0
90	2
91	0
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	0