A177338 - cp's OEIS frontend

A177338 Triangle read by rows: T(n,k) = 2^(n-tau(k)) mod n, where tau(.) is the number of divisors of its argument.

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

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

cp's OEIS Frontend

A177338 Triangle read by rows: T(n,k) = 2^(n-tau(k)) mod n, where tau(.) is the number of divisors of its argument.

Table of values

List of values

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

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

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