A348517 - cp's OEIS frontend

A348517 Positive integers m with the property that there are 4 positive integers b_1 < b_2 < b_3 < b_4 such that b_1 divides b_2, b_2 divides b_3, b_3 divides b_4, and m = b_1 + b_2 + b_3 + b_4.

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

[15, 19, 21, 22, 23, 27, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92]

cp's OEIS Frontend

A348517 Positive integers m with the property that there are 4 positive integers b_1 < b_2 < b_3 < b_4 such that b_1 divides b_2, b_2 divides b_3, b_3 divides b_4, and m = b_1 + b_2 + b_3 + b_4.

Table of values

List of values

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

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

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