A098464 - cp's OEIS frontend

A098464 Numbers k such that lcm(1,2,3,...,k) equals the denominator of the k-th harmonic number H(k).

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	9
7	10
8	11
9	12
10	13
11	14
12	15
13	16
14	17
15	27
16	28
17	29
18	30
19	31
20	32
21	49
22	50
23	51
24	52
25	53
26	88
27	89
28	90
29	91
30	92
31	93
32	94
33	95
34	96
35	97
36	98
37	99
38	125
39	126
40	127
41	128
42	129
43	130
44	131
45	132
46	133
47	134
48	135
49	136
50	137
51	138
52	139
53	140
54	141
55	142
56	143
57	144
58	145
59	146
60	147
61	148
62	149

[1, 2, 3, 4, 5, 9, 10, 11, 12, 13, 14, 15, 16, 17, 27, 28, 29, 30, 31, 32, 49, 50, 51, 52, 53, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149]

cp's OEIS Frontend

A098464 Numbers k such that lcm(1,2,3,...,k) equals the denominator of the k-th harmonic number H(k).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	9
7	10
8	11
9	12
10	13
11	14
12	15
13	16
14	17
15	27
16	28
17	29
18	30
19	31
20	32
21	49
22	50
23	51
24	52
25	53
26	88
27	89
28	90
29	91
30	92
31	93
32	94
33	95
34	96
35	97
36	98
37	99
38	125
39	126
40	127
41	128
42	129
43	130
44	131
45	132
46	133
47	134
48	135
49	136
50	137
51	138
52	139
53	140
54	141
55	142
56	143
57	144
58	145
59	146
60	147
61	148
62	149

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	9
7	10
8	11
9	12
10	13
11	14
12	15
13	16
14	17
15	27
16	28
17	29
18	30
19	31
20	32
21	49
22	50
23	51
24	52
25	53
26	88
27	89
28	90
29	91
30	92
31	93
32	94
33	95
34	96
35	97
36	98
37	99
38	125
39	126
40	127
41	128
42	129
43	130
44	131
45	132
46	133
47	134
48	135
49	136
50	137
51	138
52	139
53	140
54	141
55	142
56	143
57	144
58	145
59	146
60	147
61	148
62	149

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	9
7	10
8	11
9	12
10	13
11	14
12	15
13	16
14	17
15	27
16	28
17	29
18	30
19	31
20	32
21	49
22	50
23	51
24	52
25	53
26	88
27	89
28	90
29	91
30	92
31	93
32	94
33	95
34	96
35	97
36	98
37	99
38	125
39	126
40	127
41	128
42	129
43	130
44	131
45	132
46	133
47	134
48	135
49	136
50	137
51	138
52	139
53	140
54	141
55	142
56	143
57	144
58	145
59	146
60	147
61	148
62	149