A233386 - cp's OEIS frontend

A233386 Number of ways to write n = i + j + k with 0 < i <= j <= k and i, j, k not all equal such that phi(i)phi(j)phi(k) is a cube.

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	0
7	0
8	0
9	1
10	3
11	2
12	3
13	4
14	3
15	4
16	4
17	4
18	5
19	3
20	3
21	1
22	2
23	6
24	5
25	5
26	6
27	7
28	8
29	8
30	7
31	8
32	13
33	7
34	9
35	4
36	6
37	8
38	10
39	7
40	11
41	14
42	12
43	8
44	9
45	10
46	14
47	12
48	9
49	9
50	8
51	8
52	11
53	8
54	9
55	19
56	14
57	12
58	9
59	11
60	19
61	12
62	19
63	10
64	15
65	13
66	22
67	18
68	27
69	22
70	31
71	20
72	22
73	18
74	25
75	25
76	24
77	18
78	22
79	19
80	21
81	24
82	22
83	30
84	31
85	35
86	25
87	28
88	32
89	23
90	27
91	28
92	29
93	23
94	24
95	30
96	30
97	29
98	30
99	33
100	31

[0, 0, 0, 1, 1, 0, 0, 0, 1, 3, 2, 3, 4, 3, 4, 4, 4, 5, 3, 3, 1, 2, 6, 5, 5, 6, 7, 8, 8, 7, 8, 13, 7, 9, 4, 6, 8, 10, 7, 11, 14, 12, 8, 9, 10, 14, 12, 9, 9, 8, 8, 11, 8, 9, 19, 14, 12, 9, 11, 19, 12, 19, 10, 15, 13, 22, 18, 27, 22, 31, 20, 22, 18, 25, 25, 24, 18, 22, 19, 21, 24, 22, 30, 31, 35, 25, 28, 32, 23, 27, 28, 29, 23, 24, 30, 30, 29, 30, 33, 31]

cp's OEIS Frontend

A233386 Number of ways to write n = i + j + k with 0 < i <= j <= k and i, j, k not all equal such that phi(i)phi(j)phi(k) is a cube.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	0
7	0
8	0
9	1
10	3
11	2
12	3
13	4
14	3
15	4
16	4
17	4
18	5
19	3
20	3
21	1
22	2
23	6
24	5
25	5
26	6
27	7
28	8
29	8
30	7
31	8
32	13
33	7
34	9
35	4
36	6
37	8
38	10
39	7
40	11
41	14
42	12
43	8
44	9
45	10
46	14
47	12
48	9
49	9
50	8
51	8
52	11
53	8
54	9
55	19
56	14
57	12
58	9
59	11
60	19
61	12
62	19
63	10
64	15
65	13
66	22
67	18
68	27
69	22
70	31
71	20
72	22
73	18
74	25
75	25
76	24
77	18
78	22
79	19
80	21
81	24
82	22
83	30
84	31
85	35
86	25
87	28
88	32
89	23
90	27
91	28
92	29
93	23
94	24
95	30
96	30
97	29
98	30
99	33
100	31

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	0
7	0
8	0
9	1
10	3
11	2
12	3
13	4
14	3
15	4
16	4
17	4
18	5
19	3
20	3
21	1
22	2
23	6
24	5
25	5
26	6
27	7
28	8
29	8
30	7
31	8
32	13
33	7
34	9
35	4
36	6
37	8
38	10
39	7
40	11
41	14
42	12
43	8
44	9
45	10
46	14
47	12
48	9
49	9
50	8
51	8
52	11
53	8
54	9
55	19
56	14
57	12
58	9
59	11
60	19
61	12
62	19
63	10
64	15
65	13
66	22
67	18
68	27
69	22
70	31
71	20
72	22
73	18
74	25
75	25
76	24
77	18
78	22
79	19
80	21
81	24
82	22
83	30
84	31
85	35
86	25
87	28
88	32
89	23
90	27
91	28
92	29
93	23
94	24
95	30
96	30
97	29
98	30
99	33
100	31

cp's OEIS Frontend

A233386 Number of ways to write n = i + j + k with 0 < i <= j <= k and i, j, k not all equal such that phi(i)*phi(j)*phi(k) is a cube.

Table of values

List of values

A233386 Number of ways to write n = i + j + k with 0 < i <= j <= k and i, j, k not all equal such that phi(i)phi(j)phi(k) is a cube.

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	0
7	0
8	0
9	1
10	3
11	2
12	3
13	4
14	3
15	4
16	4
17	4
18	5
19	3
20	3
21	1
22	2
23	6
24	5
25	5
26	6
27	7
28	8
29	8
30	7
31	8
32	13
33	7
34	9
35	4
36	6
37	8
38	10
39	7
40	11
41	14
42	12
43	8
44	9
45	10
46	14
47	12
48	9
49	9
50	8
51	8
52	11
53	8
54	9
55	19
56	14
57	12
58	9
59	11
60	19
61	12
62	19
63	10
64	15
65	13
66	22
67	18
68	27
69	22
70	31
71	20
72	22
73	18
74	25
75	25
76	24
77	18
78	22
79	19
80	21
81	24
82	22
83	30
84	31
85	35
86	25
87	28
88	32
89	23
90	27
91	28
92	29
93	23
94	24
95	30
96	30
97	29
98	30
99	33
100	31