A174428 - cp's OEIS frontend

A174428 Triangle read by rows: R(n,k) = sigma(n) mod k, where sigma(.) is the sum of divisors.

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

[0, 0, 1, 0, 0, 1, 0, 1, 1, 3, 0, 0, 0, 2, 1, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 3, 2, 1, 0, 1, 0, 3, 0, 3, 1, 7, 0, 1, 1, 1, 3, 1, 6, 5, 4, 0, 0, 0, 2, 3, 0, 4, 2, 0, 8, 0, 0, 0, 0, 2, 0, 5, 4, 3, 2, 1, 0, 0, 1, 0, 3, 4, 0, 4, 1, 8, 6, 4, 0, 0, 2, 2, 4, 2, 0, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0, 4, 0, 3, 0, 6, 4, 2, 0, 11, 10]

cp's OEIS Frontend

A174428 Triangle read by rows: R(n,k) = sigma(n) mod k, where sigma(.) is the sum of divisors.

Table of values

List of values

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

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

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