A333646 - cp's OEIS frontend

A333646 Numbers k divisible by the largest prime factor of the sum of divisors of k; a(1) = 1.

n	a(n)
1	1
2	6
3	15
4	28
5	30
6	33
7	40
8	42
9	51
10	66
11	69
12	84
13	91
14	95
15	102
16	105
17	117
18	120
19	135
20	138
21	140
22	141
23	145
24	159
25	165
26	182
27	186
28	190
29	210
30	213
31	224
32	231
33	234
34	255
35	270
36	273
37	280
38	282
39	285
40	287
41	290
42	295
43	308
44	318
45	321
46	330
47	345
48	357
49	364
50	395
51	420
52	426
53	435
54	440
55	445
56	455

[1, 6, 15, 28, 30, 33, 40, 42, 51, 66, 69, 84, 91, 95, 102, 105, 117, 120, 135, 138, 140, 141, 145, 159, 165, 182, 186, 190, 210, 213, 224, 231, 234, 255, 270, 273, 280, 282, 285, 287, 290, 295, 308, 318, 321, 330, 345, 357, 364, 395, 420, 426, 435, 440, 445, 455]

cp's OEIS Frontend

A333646 Numbers k divisible by the largest prime factor of the sum of divisors of k; a(1) = 1.

Table of values

List of values

n	a(n)
1	1
2	6
3	15
4	28
5	30
6	33
7	40
8	42
9	51
10	66
11	69
12	84
13	91
14	95
15	102
16	105
17	117
18	120
19	135
20	138
21	140
22	141
23	145
24	159
25	165
26	182
27	186
28	190
29	210
30	213
31	224
32	231
33	234
34	255
35	270
36	273
37	280
38	282
39	285
40	287
41	290
42	295
43	308
44	318
45	321
46	330
47	345
48	357
49	364
50	395
51	420
52	426
53	435
54	440
55	445
56	455

n	a(n)
1	1
2	6
3	15
4	28
5	30
6	33
7	40
8	42
9	51
10	66
11	69
12	84
13	91
14	95
15	102
16	105
17	117
18	120
19	135
20	138
21	140
22	141
23	145
24	159
25	165
26	182
27	186
28	190
29	210
30	213
31	224
32	231
33	234
34	255
35	270
36	273
37	280
38	282
39	285
40	287
41	290
42	295
43	308
44	318
45	321
46	330
47	345
48	357
49	364
50	395
51	420
52	426
53	435
54	440
55	445
56	455

n	a(n)
1	1
2	6
3	15
4	28
5	30
6	33
7	40
8	42
9	51
10	66
11	69
12	84
13	91
14	95
15	102
16	105
17	117
18	120
19	135
20	138
21	140
22	141
23	145
24	159
25	165
26	182
27	186
28	190
29	210
30	213
31	224
32	231
33	234
34	255
35	270
36	273
37	280
38	282
39	285
40	287
41	290
42	295
43	308
44	318
45	321
46	330
47	345
48	357
49	364
50	395
51	420
52	426
53	435
54	440
55	445
56	455