A340995 - cp's OEIS frontend

A340995 Triangle T(n,k) whose k-th column is the k-fold self-convolution of the Euler totient function phi; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	1
6	0
7	2
8	2
9	1
10	0
11	2
12	5
13	3
14	1
15	0
16	4
17	8
18	9
19	4
20	1
21	0
22	2
23	16
24	19
25	14
26	5
27	1
28	0
29	6
30	20
31	42
32	36
33	20
34	6
35	1
36	0
37	4
38	36
39	72
40	89
41	60
42	27
43	7
44	1
45	0
46	6
47	44
48	134
49	184
50	165
51	92
52	35
53	8
54	1
55	0
56	4
57	68
58	210
59	376
60	391
61	279
62	133
63	44
64	9
65	1
66	0
67	10
68	76
69	348
70	688
71	880
72	738
73	441
74	184
75	54
76	10
77	1

[1, 0, 1, 0, 1, 1, 0, 2, 2, 1, 0, 2, 5, 3, 1, 0, 4, 8, 9, 4, 1, 0, 2, 16, 19, 14, 5, 1, 0, 6, 20, 42, 36, 20, 6, 1, 0, 4, 36, 72, 89, 60, 27, 7, 1, 0, 6, 44, 134, 184, 165, 92, 35, 8, 1, 0, 4, 68, 210, 376, 391, 279, 133, 44, 9, 1, 0, 10, 76, 348, 688, 880, 738, 441, 184, 54, 10, 1]

cp's OEIS Frontend

A340995 Triangle T(n,k) whose k-th column is the k-fold self-convolution of the Euler totient function phi; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

Table of values

List of values

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	1
6	0
7	2
8	2
9	1
10	0
11	2
12	5
13	3
14	1
15	0
16	4
17	8
18	9
19	4
20	1
21	0
22	2
23	16
24	19
25	14
26	5
27	1
28	0
29	6
30	20
31	42
32	36
33	20
34	6
35	1
36	0
37	4
38	36
39	72
40	89
41	60
42	27
43	7
44	1
45	0
46	6
47	44
48	134
49	184
50	165
51	92
52	35
53	8
54	1
55	0
56	4
57	68
58	210
59	376
60	391
61	279
62	133
63	44
64	9
65	1
66	0
67	10
68	76
69	348
70	688
71	880
72	738
73	441
74	184
75	54
76	10
77	1

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	1
6	0
7	2
8	2
9	1
10	0
11	2
12	5
13	3
14	1
15	0
16	4
17	8
18	9
19	4
20	1
21	0
22	2
23	16
24	19
25	14
26	5
27	1
28	0
29	6
30	20
31	42
32	36
33	20
34	6
35	1
36	0
37	4
38	36
39	72
40	89
41	60
42	27
43	7
44	1
45	0
46	6
47	44
48	134
49	184
50	165
51	92
52	35
53	8
54	1
55	0
56	4
57	68
58	210
59	376
60	391
61	279
62	133
63	44
64	9
65	1
66	0
67	10
68	76
69	348
70	688
71	880
72	738
73	441
74	184
75	54
76	10
77	1

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	1
6	0
7	2
8	2
9	1
10	0
11	2
12	5
13	3
14	1
15	0
16	4
17	8
18	9
19	4
20	1
21	0
22	2
23	16
24	19
25	14
26	5
27	1
28	0
29	6
30	20
31	42
32	36
33	20
34	6
35	1
36	0
37	4
38	36
39	72
40	89
41	60
42	27
43	7
44	1
45	0
46	6
47	44
48	134
49	184
50	165
51	92
52	35
53	8
54	1
55	0
56	4
57	68
58	210
59	376
60	391
61	279
62	133
63	44
64	9
65	1
66	0
67	10
68	76
69	348
70	688
71	880
72	738
73	441
74	184
75	54
76	10
77	1