A088724 - cp's OEIS frontend

A088724 Numbers having exactly one divisor d>1 such that also d+1 is a divisor.

n	a(n)
1	6
2	18
3	20
4	40
5	54
6	56
7	66
8	78
9	80
10	100
11	102
12	110
13	112
14	114
15	138
16	140
17	160
18	162
19	174
20	182
21	186
22	198
23	200
24	222
25	224
26	234
27	246
28	258
29	260
30	272
31	282
32	318
33	320
34	340
35	354
36	364
37	366
38	392
39	400
40	402
41	414
42	426
43	438
44	448
45	460
46	474
47	486
48	498
49	500
50	506
51	520
52	522
53	534
54	544

[6, 18, 20, 40, 54, 56, 66, 78, 80, 100, 102, 110, 112, 114, 138, 140, 160, 162, 174, 182, 186, 198, 200, 222, 224, 234, 246, 258, 260, 272, 282, 318, 320, 340, 354, 364, 366, 392, 400, 402, 414, 426, 438, 448, 460, 474, 486, 498, 500, 506, 520, 522, 534, 544]

cp's OEIS Frontend

A088724 Numbers having exactly one divisor d>1 such that also d+1 is a divisor.

Table of values

List of values

n	a(n)
1	6
2	18
3	20
4	40
5	54
6	56
7	66
8	78
9	80
10	100
11	102
12	110
13	112
14	114
15	138
16	140
17	160
18	162
19	174
20	182
21	186
22	198
23	200
24	222
25	224
26	234
27	246
28	258
29	260
30	272
31	282
32	318
33	320
34	340
35	354
36	364
37	366
38	392
39	400
40	402
41	414
42	426
43	438
44	448
45	460
46	474
47	486
48	498
49	500
50	506
51	520
52	522
53	534
54	544

n	a(n)
1	6
2	18
3	20
4	40
5	54
6	56
7	66
8	78
9	80
10	100
11	102
12	110
13	112
14	114
15	138
16	140
17	160
18	162
19	174
20	182
21	186
22	198
23	200
24	222
25	224
26	234
27	246
28	258
29	260
30	272
31	282
32	318
33	320
34	340
35	354
36	364
37	366
38	392
39	400
40	402
41	414
42	426
43	438
44	448
45	460
46	474
47	486
48	498
49	500
50	506
51	520
52	522
53	534
54	544

n	a(n)
1	6
2	18
3	20
4	40
5	54
6	56
7	66
8	78
9	80
10	100
11	102
12	110
13	112
14	114
15	138
16	140
17	160
18	162
19	174
20	182
21	186
22	198
23	200
24	222
25	224
26	234
27	246
28	258
29	260
30	272
31	282
32	318
33	320
34	340
35	354
36	364
37	366
38	392
39	400
40	402
41	414
42	426
43	438
44	448
45	460
46	474
47	486
48	498
49	500
50	506
51	520
52	522
53	534
54	544