A300331 - cp's OEIS frontend

A300331 Integers represented by a cyclotomic binary form Phi{k}(x,y) with positive integers x and y where max(x, y) >= 2 and the index k is not prime.

n	a(n)
1	5
2	8
3	9
4	10
5	11
6	16
7	17
8	18
9	20
10	25
11	26
12	29
13	32
14	34
15	36
16	40
17	41
18	45
19	50
20	53
21	55
22	58
23	64
24	65
25	68
26	72
27	74
28	81
29	82
30	85
31	89
32	90
33	98
34	100
35	101
36	104
37	106
38	113
39	116
40	122
41	125
42	128
43	130
44	136
45	137
46	144
47	145
48	146
49	149
50	153
51	160
52	162
53	164
54	170
55	173
56	176
57	178
58	180
59	185

[5, 8, 9, 10, 11, 16, 17, 18, 20, 25, 26, 29, 32, 34, 36, 40, 41, 45, 50, 53, 55, 58, 64, 65, 68, 72, 74, 81, 82, 85, 89, 90, 98, 100, 101, 104, 106, 113, 116, 122, 125, 128, 130, 136, 137, 144, 145, 146, 149, 153, 160, 162, 164, 170, 173, 176, 178, 180, 185]

cp's OEIS Frontend

A300331 Integers represented by a cyclotomic binary form Phi{k}(x,y) with positive integers x and y where max(x, y) >= 2 and the index k is not prime.

Table of values

List of values

n	a(n)
1	5
2	8
3	9
4	10
5	11
6	16
7	17
8	18
9	20
10	25
11	26
12	29
13	32
14	34
15	36
16	40
17	41
18	45
19	50
20	53
21	55
22	58
23	64
24	65
25	68
26	72
27	74
28	81
29	82
30	85
31	89
32	90
33	98
34	100
35	101
36	104
37	106
38	113
39	116
40	122
41	125
42	128
43	130
44	136
45	137
46	144
47	145
48	146
49	149
50	153
51	160
52	162
53	164
54	170
55	173
56	176
57	178
58	180
59	185

n	a(n)
1	5
2	8
3	9
4	10
5	11
6	16
7	17
8	18
9	20
10	25
11	26
12	29
13	32
14	34
15	36
16	40
17	41
18	45
19	50
20	53
21	55
22	58
23	64
24	65
25	68
26	72
27	74
28	81
29	82
30	85
31	89
32	90
33	98
34	100
35	101
36	104
37	106
38	113
39	116
40	122
41	125
42	128
43	130
44	136
45	137
46	144
47	145
48	146
49	149
50	153
51	160
52	162
53	164
54	170
55	173
56	176
57	178
58	180
59	185

n	a(n)
1	5
2	8
3	9
4	10
5	11
6	16
7	17
8	18
9	20
10	25
11	26
12	29
13	32
14	34
15	36
16	40
17	41
18	45
19	50
20	53
21	55
22	58
23	64
24	65
25	68
26	72
27	74
28	81
29	82
30	85
31	89
32	90
33	98
34	100
35	101
36	104
37	106
38	113
39	116
40	122
41	125
42	128
43	130
44	136
45	137
46	144
47	145
48	146
49	149
50	153
51	160
52	162
53	164
54	170
55	173
56	176
57	178
58	180
59	185