A330680 - cp's OEIS frontend

A330680 Numbers that begin a run of consecutive integers k such that the denominator of the k-th harmonic number is lcm(1..k).

n	a(n)
1	1
2	9
3	27
4	49
5	88
6	125
7	243
8	289
9	361
10	484
11	841
12	968
13	1164
14	1331
15	1369
16	2401
17	3125
18	3488
19	3721
20	6889
21	7085
22	7761
23	7921
24	8342
25	8502
26	9156
27	10648
28	19683
29	22208
30	22801
31	25886
32	28561
33	29929
34	30877
35	32041
36	32761
37	33178
38	36481
39	59049
40	83521
41	87079
42	88307
43	92199

[1, 9, 27, 49, 88, 125, 243, 289, 361, 484, 841, 968, 1164, 1331, 1369, 2401, 3125, 3488, 3721, 6889, 7085, 7761, 7921, 8342, 8502, 9156, 10648, 19683, 22208, 22801, 25886, 28561, 29929, 30877, 32041, 32761, 33178, 36481, 59049, 83521, 87079, 88307, 92199]

cp's OEIS Frontend

A330680 Numbers that begin a run of consecutive integers k such that the denominator of the k-th harmonic number is lcm(1..k).

Table of values

List of values