A177266 - cp's OEIS frontend

A177266 Triangle read by rows: R(n,k) = 2^(semiprime(n)-semiprime(k)) mod semiprime(n).

n	a(n)
1	1
2	4
3	1
4	5
5	8
6	1
7	4
8	6
9	2
10	1
11	2
12	4
13	4
14	2
15	1
16	8
17	2
18	4
19	2
20	2
21	1
22	11
23	8
24	1
25	11
26	2
27	1
28	1
29	14
30	20
31	8
32	4
33	14
34	18
35	2
36	1
37	2
38	13
39	11
40	18
41	23
42	24
43	16
44	8
45	1
46	10
47	22
48	6
49	16
50	14
51	20
52	6
53	16
54	2
55	1
56	17
57	29
58	16
59	8
60	17
61	25
62	4
63	2
64	25
65	29
66	1
67	30
68	16
69	2
70	18
71	16
72	8
73	32
74	16
75	2
76	18
77	2
78	1
79	23
80	32
81	4
82	2
83	22

[1, 4, 1, 5, 8, 1, 4, 6, 2, 1, 2, 4, 4, 2, 1, 8, 2, 4, 2, 2, 1, 11, 8, 1, 11, 2, 1, 1, 14, 20, 8, 4, 14, 18, 2, 1, 2, 13, 11, 18, 23, 24, 16, 8, 1, 10, 22, 6, 16, 14, 20, 6, 16, 2, 1, 17, 29, 16, 8, 17, 25, 4, 2, 25, 29, 1, 30, 16, 2, 18, 16, 8, 32, 16, 2, 18, 2, 1, 23, 32, 4, 2, 22]

cp's OEIS Frontend

A177266 Triangle read by rows: R(n,k) = 2^(semiprime(n)-semiprime(k)) mod semiprime(n).

Table of values

List of values

n	a(n)
1	1
2	4
3	1
4	5
5	8
6	1
7	4
8	6
9	2
10	1
11	2
12	4
13	4
14	2
15	1
16	8
17	2
18	4
19	2
20	2
21	1
22	11
23	8
24	1
25	11
26	2
27	1
28	1
29	14
30	20
31	8
32	4
33	14
34	18
35	2
36	1
37	2
38	13
39	11
40	18
41	23
42	24
43	16
44	8
45	1
46	10
47	22
48	6
49	16
50	14
51	20
52	6
53	16
54	2
55	1
56	17
57	29
58	16
59	8
60	17
61	25
62	4
63	2
64	25
65	29
66	1
67	30
68	16
69	2
70	18
71	16
72	8
73	32
74	16
75	2
76	18
77	2
78	1
79	23
80	32
81	4
82	2
83	22

n	a(n)
1	1
2	4
3	1
4	5
5	8
6	1
7	4
8	6
9	2
10	1
11	2
12	4
13	4
14	2
15	1
16	8
17	2
18	4
19	2
20	2
21	1
22	11
23	8
24	1
25	11
26	2
27	1
28	1
29	14
30	20
31	8
32	4
33	14
34	18
35	2
36	1
37	2
38	13
39	11
40	18
41	23
42	24
43	16
44	8
45	1
46	10
47	22
48	6
49	16
50	14
51	20
52	6
53	16
54	2
55	1
56	17
57	29
58	16
59	8
60	17
61	25
62	4
63	2
64	25
65	29
66	1
67	30
68	16
69	2
70	18
71	16
72	8
73	32
74	16
75	2
76	18
77	2
78	1
79	23
80	32
81	4
82	2
83	22

n	a(n)
1	1
2	4
3	1
4	5
5	8
6	1
7	4
8	6
9	2
10	1
11	2
12	4
13	4
14	2
15	1
16	8
17	2
18	4
19	2
20	2
21	1
22	11
23	8
24	1
25	11
26	2
27	1
28	1
29	14
30	20
31	8
32	4
33	14
34	18
35	2
36	1
37	2
38	13
39	11
40	18
41	23
42	24
43	16
44	8
45	1
46	10
47	22
48	6
49	16
50	14
51	20
52	6
53	16
54	2
55	1
56	17
57	29
58	16
59	8
60	17
61	25
62	4
63	2
64	25
65	29
66	1
67	30
68	16
69	2
70	18
71	16
72	8
73	32
74	16
75	2
76	18
77	2
78	1
79	23
80	32
81	4
82	2
83	22