A300815 - cp's OEIS frontend

A300815 Number of 3 division {a, b, c} (a < b < c) of n where b isn't a multiple of a, c isn't a multiple of a and c isn't a multiple of b.

n	a(n)
10	1
11	0
12	2
13	0
14	2
15	2
16	4
17	2
18	7
19	3
20	9
21	8
22	10
23	7
24	17
25	11
26	16
27	16
28	23
29	17
30	32
31	21
32	31
33	30
34	36
35	36
36	52
37	36
38	47
39	49
40	63
41	50
42	73
43	56
44	75
45	77
46	80
47	74
48	105
49	87
50	105
51	101
52	116
53	102
54	133
55	123
56	143
57	136
58	144
59	137
60	185
61	148
62	170
63	180
64	194
65	187
66	218
67	191
68	223
69	219
70	247
71	224
72	278
73	237
74	263
75	276
76	292
77	283
78	321
79	292
80	344
81	326
82	340
83	329
84	399
85	361

[1, 0, 2, 0, 2, 2, 4, 2, 7, 3, 9, 8, 10, 7, 17, 11, 16, 16, 23, 17, 32, 21, 31, 30, 36, 36, 52, 36, 47, 49, 63, 50, 73, 56, 75, 77, 80, 74, 105, 87, 105, 101, 116, 102, 133, 123, 143, 136, 144, 137, 185, 148, 170, 180, 194, 187, 218, 191, 223, 219, 247, 224, 278, 237, 263, 276, 292, 283, 321, 292, 344, 326, 340, 329, 399, 361]

cp's OEIS Frontend

A300815 Number of 3 division {a, b, c} (a < b < c) of n where b isn't a multiple of a, c isn't a multiple of a and c isn't a multiple of b.

Table of values

List of values

n	a(n)
10	1
11	0
12	2
13	0
14	2
15	2
16	4
17	2
18	7
19	3
20	9
21	8
22	10
23	7
24	17
25	11
26	16
27	16
28	23
29	17
30	32
31	21
32	31
33	30
34	36
35	36
36	52
37	36
38	47
39	49
40	63
41	50
42	73
43	56
44	75
45	77
46	80
47	74
48	105
49	87
50	105
51	101
52	116
53	102
54	133
55	123
56	143
57	136
58	144
59	137
60	185
61	148
62	170
63	180
64	194
65	187
66	218
67	191
68	223
69	219
70	247
71	224
72	278
73	237
74	263
75	276
76	292
77	283
78	321
79	292
80	344
81	326
82	340
83	329
84	399
85	361

n	a(n)
10	1
11	0
12	2
13	0
14	2
15	2
16	4
17	2
18	7
19	3
20	9
21	8
22	10
23	7
24	17
25	11
26	16
27	16
28	23
29	17
30	32
31	21
32	31
33	30
34	36
35	36
36	52
37	36
38	47
39	49
40	63
41	50
42	73
43	56
44	75
45	77
46	80
47	74
48	105
49	87
50	105
51	101
52	116
53	102
54	133
55	123
56	143
57	136
58	144
59	137
60	185
61	148
62	170
63	180
64	194
65	187
66	218
67	191
68	223
69	219
70	247
71	224
72	278
73	237
74	263
75	276
76	292
77	283
78	321
79	292
80	344
81	326
82	340
83	329
84	399
85	361

n	a(n)
10	1
11	0
12	2
13	0
14	2
15	2
16	4
17	2
18	7
19	3
20	9
21	8
22	10
23	7
24	17
25	11
26	16
27	16
28	23
29	17
30	32
31	21
32	31
33	30
34	36
35	36
36	52
37	36
38	47
39	49
40	63
41	50
42	73
43	56
44	75
45	77
46	80
47	74
48	105
49	87
50	105
51	101
52	116
53	102
54	133
55	123
56	143
57	136
58	144
59	137
60	185
61	148
62	170
63	180
64	194
65	187
66	218
67	191
68	223
69	219
70	247
71	224
72	278
73	237
74	263
75	276
76	292
77	283
78	321
79	292
80	344
81	326
82	340
83	329
84	399
85	361