A173662 - cp's OEIS frontend

A173662 Triangle read by rows: T(n,k) = semiprime(n) mod semiprime(k), 1 <= k <= n.

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

[0, 2, 0, 1, 3, 0, 2, 4, 1, 0, 2, 2, 5, 4, 0, 3, 3, 6, 5, 1, 0, 1, 3, 3, 1, 7, 6, 0, 2, 4, 4, 2, 8, 7, 1, 0, 1, 1, 7, 5, 11, 10, 4, 3, 0, 2, 2, 8, 6, 12, 11, 5, 4, 1, 0, 1, 3, 6, 3, 5, 3, 12, 11, 8, 7, 0, 2, 4, 7, 4]

cp's OEIS Frontend

A173662 Triangle read by rows: T(n,k) = semiprime(n) mod semiprime(k), 1 <= k <= n.

Table of values

List of values

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

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

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