A046421 - cp's OEIS frontend

A046421 Index of smallest repunit having exactly n prime factors (counted with multiplicity).

n	a(n)
0	1
1	2
2	3
3	13
4	8
5	6
6	15
7	12
8	28
9	18
10	24
11	32
12	36
13	30
14	54
15	42
16	78
17	100
18	72
19	176
20	60
21	208
22	84
23	132
24	160
25	198
26	120
27	204
28	216
29	308
30	168
31	280
32	306
33	180
34	210
35	264
36	270
37	252
38	378
39	336
40	300

[1, 2, 3, 13, 8, 6, 15, 12, 28, 18, 24, 32, 36, 30, 54, 42, 78, 100, 72, 176, 60, 208, 84, 132, 160, 198, 120, 204, 216, 308, 168, 280, 306, 180, 210, 264, 270, 252, 378, 336, 300]

cp's OEIS Frontend

A046421 Index of smallest repunit having exactly n prime factors (counted with multiplicity).

Table of values

List of values

n	a(n)
0	1
1	2
2	3
3	13
4	8
5	6
6	15
7	12
8	28
9	18
10	24
11	32
12	36
13	30
14	54
15	42
16	78
17	100
18	72
19	176
20	60
21	208
22	84
23	132
24	160
25	198
26	120
27	204
28	216
29	308
30	168
31	280
32	306
33	180
34	210
35	264
36	270
37	252
38	378
39	336
40	300

n	a(n)
0	1
1	2
2	3
3	13
4	8
5	6
6	15
7	12
8	28
9	18
10	24
11	32
12	36
13	30
14	54
15	42
16	78
17	100
18	72
19	176
20	60
21	208
22	84
23	132
24	160
25	198
26	120
27	204
28	216
29	308
30	168
31	280
32	306
33	180
34	210
35	264
36	270
37	252
38	378
39	336
40	300

n	a(n)
0	1
1	2
2	3
3	13
4	8
5	6
6	15
7	12
8	28
9	18
10	24
11	32
12	36
13	30
14	54
15	42
16	78
17	100
18	72
19	176
20	60
21	208
22	84
23	132
24	160
25	198
26	120
27	204
28	216
29	308
30	168
31	280
32	306
33	180
34	210
35	264
36	270
37	252
38	378
39	336
40	300