A035166 - cp's OEIS frontend

A035166 Let d(m) = denominator of Sum_{k=1..m} 1/k^2 and consider f(m) = product of primes which appear to odd powers in d(m); sequence lists m such that f(m) is different from f(m-1).

n	a(n)
1	1
2	10
3	15
4	20
5	25
6	42
7	49
8	50
9	55
10	66
11	75
12	78
13	91
14	100
15	110
16	121
17	125
18	136
19	153
20	156
21	164
22	169
23	171
24	182
25	189
26	190
27	205
28	250
29	253
30	272
31	276
32	289
33	294
34	342
35	343
36	354
37	361
38	375
39	406
40	413
41	435
42	465
43	473
44	496
45	500
46	506
47	516
48	529
49	555
50	592
51	605
52	625

[1, 10, 15, 20, 25, 42, 49, 50, 55, 66, 75, 78, 91, 100, 110, 121, 125, 136, 153, 156, 164, 169, 171, 182, 189, 190, 205, 250, 253, 272, 276, 289, 294, 342, 343, 354, 361, 375, 406, 413, 435, 465, 473, 496, 500, 506, 516, 529, 555, 592, 605, 625]

cp's OEIS Frontend

A035166 Let d(m) = denominator of Sum_{k=1..m} 1/k^2 and consider f(m) = product of primes which appear to odd powers in d(m); sequence lists m such that f(m) is different from f(m-1).

Table of values

List of values

n	a(n)
1	1
2	10
3	15
4	20
5	25
6	42
7	49
8	50
9	55
10	66
11	75
12	78
13	91
14	100
15	110
16	121
17	125
18	136
19	153
20	156
21	164
22	169
23	171
24	182
25	189
26	190
27	205
28	250
29	253
30	272
31	276
32	289
33	294
34	342
35	343
36	354
37	361
38	375
39	406
40	413
41	435
42	465
43	473
44	496
45	500
46	506
47	516
48	529
49	555
50	592
51	605
52	625

n	a(n)
1	1
2	10
3	15
4	20
5	25
6	42
7	49
8	50
9	55
10	66
11	75
12	78
13	91
14	100
15	110
16	121
17	125
18	136
19	153
20	156
21	164
22	169
23	171
24	182
25	189
26	190
27	205
28	250
29	253
30	272
31	276
32	289
33	294
34	342
35	343
36	354
37	361
38	375
39	406
40	413
41	435
42	465
43	473
44	496
45	500
46	506
47	516
48	529
49	555
50	592
51	605
52	625

n	a(n)
1	1
2	10
3	15
4	20
5	25
6	42
7	49
8	50
9	55
10	66
11	75
12	78
13	91
14	100
15	110
16	121
17	125
18	136
19	153
20	156
21	164
22	169
23	171
24	182
25	189
26	190
27	205
28	250
29	253
30	272
31	276
32	289
33	294
34	342
35	343
36	354
37	361
38	375
39	406
40	413
41	435
42	465
43	473
44	496
45	500
46	506
47	516
48	529
49	555
50	592
51	605
52	625