A061445 - cp's OEIS frontend

A061445 Composite numbers n such that primitive part of Lucas(n) (see A061447) is prime.

n	a(n)
1	9
2	10
3	14
4	15
5	16
6	20
7	21
8	26
9	27
10	30
11	33
12	36
13	38
14	49
15	56
16	62
17	66
18	68
19	70
20	72
21	76
22	78
23	80
24	86
25	90
26	91
27	110
28	117
29	120
30	121
31	136
32	140
33	144
34	164
35	168
36	172
37	178
38	202
39	207
40	220
41	261
42	284
43	328
44	354
45	357
46	420
47	423
48	458
49	459
50	468
51	480
52	504
53	513
54	530
55	586
56	606

[9, 10, 14, 15, 16, 20, 21, 26, 27, 30, 33, 36, 38, 49, 56, 62, 66, 68, 70, 72, 76, 78, 80, 86, 90, 91, 110, 117, 120, 121, 136, 140, 144, 164, 168, 172, 178, 202, 207, 220, 261, 284, 328, 354, 357, 420, 423, 458, 459, 468, 480, 504, 513, 530, 586, 606]

cp's OEIS Frontend

A061445 Composite numbers n such that primitive part of Lucas(n) (see A061447) is prime.

Table of values

List of values

n	a(n)
1	9
2	10
3	14
4	15
5	16
6	20
7	21
8	26
9	27
10	30
11	33
12	36
13	38
14	49
15	56
16	62
17	66
18	68
19	70
20	72
21	76
22	78
23	80
24	86
25	90
26	91
27	110
28	117
29	120
30	121
31	136
32	140
33	144
34	164
35	168
36	172
37	178
38	202
39	207
40	220
41	261
42	284
43	328
44	354
45	357
46	420
47	423
48	458
49	459
50	468
51	480
52	504
53	513
54	530
55	586
56	606

n	a(n)
1	9
2	10
3	14
4	15
5	16
6	20
7	21
8	26
9	27
10	30
11	33
12	36
13	38
14	49
15	56
16	62
17	66
18	68
19	70
20	72
21	76
22	78
23	80
24	86
25	90
26	91
27	110
28	117
29	120
30	121
31	136
32	140
33	144
34	164
35	168
36	172
37	178
38	202
39	207
40	220
41	261
42	284
43	328
44	354
45	357
46	420
47	423
48	458
49	459
50	468
51	480
52	504
53	513
54	530
55	586
56	606

n	a(n)
1	9
2	10
3	14
4	15
5	16
6	20
7	21
8	26
9	27
10	30
11	33
12	36
13	38
14	49
15	56
16	62
17	66
18	68
19	70
20	72
21	76
22	78
23	80
24	86
25	90
26	91
27	110
28	117
29	120
30	121
31	136
32	140
33	144
34	164
35	168
36	172
37	178
38	202
39	207
40	220
41	261
42	284
43	328
44	354
45	357
46	420
47	423
48	458
49	459
50	468
51	480
52	504
53	513
54	530
55	586
56	606