A127528 - cp's OEIS frontend

A127528 Triangle T(n,k) read by rows: tau(n)*phi(n/k) if k|n, else 0.

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

[1, 2, 2, 4, 0, 2, 6, 3, 0, 3, 8, 0, 0, 0, 2, 8, 8, 4, 0, 0, 4, 12, 0, 0, 0, 0, 0, 2, 16, 8, 0, 4, 0, 0, 0, 4, 18, 0, 6, 0, 0, 0, 0, 0, 3, 16, 16, 0, 0, 4, 0, 0, 0, 0, 4, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 24, 12, 12, 12, 0, 6, 0, 0, 0, 0, 0, 6, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 24, 24]

cp's OEIS Frontend

A127528 Triangle T(n,k) read by rows: tau(n)*phi(n/k) if k|n, else 0.

Table of values

List of values

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

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

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