A160495 - cp's OEIS frontend

A160495 Irregular triangle of residue classes (mod pq) of primes r such that the cyclotomic polynomial Phi(pqr,x) is flat.

n	a(n)
1	1
2	14
3	1
4	2
5	10
6	11
7	19
8	20
9	1
10	7
11	8
12	25
13	26
14	32
15	1
16	34
17	1
18	2
19	8
20	17
21	19
22	20
23	22
24	31
25	37
26	38
27	1
28	13
29	20
30	22
31	23
32	28
33	29
34	31
35	38
36	50
37	1
38	2
39	53
40	54
41	1
42	2
43	7
44	13
45	16
46	23
47	28
48	29
49	34
50	41
51	44
52	50
53	55
54	56
55	1
56	64
57	1
58	7
59	8
60	10
61	17
62	19
63	28
64	41
65	50
66	52
67	59
68	61
69	62
70	68

[1, 14, 1, 2, 10, 11, 19, 20, 1, 7, 8, 25, 26, 32, 1, 34, 1, 2, 8, 17, 19, 20, 22, 31, 37, 38, 1, 13, 20, 22, 23, 28, 29, 31, 38, 50, 1, 2, 53, 54, 1, 2, 7, 13, 16, 23, 28, 29, 34, 41, 44, 50, 55, 56, 1, 64, 1, 7, 8, 10, 17, 19, 28, 41, 50, 52, 59, 61, 62, 68]

cp's OEIS Frontend

A160495 Irregular triangle of residue classes (mod pq) of primes r such that the cyclotomic polynomial Phi(pqr,x) is flat.

Table of values

List of values

n	a(n)
1	1
2	14
3	1
4	2
5	10
6	11
7	19
8	20
9	1
10	7
11	8
12	25
13	26
14	32
15	1
16	34
17	1
18	2
19	8
20	17
21	19
22	20
23	22
24	31
25	37
26	38
27	1
28	13
29	20
30	22
31	23
32	28
33	29
34	31
35	38
36	50
37	1
38	2
39	53
40	54
41	1
42	2
43	7
44	13
45	16
46	23
47	28
48	29
49	34
50	41
51	44
52	50
53	55
54	56
55	1
56	64
57	1
58	7
59	8
60	10
61	17
62	19
63	28
64	41
65	50
66	52
67	59
68	61
69	62
70	68

n	a(n)
1	1
2	14
3	1
4	2
5	10
6	11
7	19
8	20
9	1
10	7
11	8
12	25
13	26
14	32
15	1
16	34
17	1
18	2
19	8
20	17
21	19
22	20
23	22
24	31
25	37
26	38
27	1
28	13
29	20
30	22
31	23
32	28
33	29
34	31
35	38
36	50
37	1
38	2
39	53
40	54
41	1
42	2
43	7
44	13
45	16
46	23
47	28
48	29
49	34
50	41
51	44
52	50
53	55
54	56
55	1
56	64
57	1
58	7
59	8
60	10
61	17
62	19
63	28
64	41
65	50
66	52
67	59
68	61
69	62
70	68

n	a(n)
1	1
2	14
3	1
4	2
5	10
6	11
7	19
8	20
9	1
10	7
11	8
12	25
13	26
14	32
15	1
16	34
17	1
18	2
19	8
20	17
21	19
22	20
23	22
24	31
25	37
26	38
27	1
28	13
29	20
30	22
31	23
32	28
33	29
34	31
35	38
36	50
37	1
38	2
39	53
40	54
41	1
42	2
43	7
44	13
45	16
46	23
47	28
48	29
49	34
50	41
51	44
52	50
53	55
54	56
55	1
56	64
57	1
58	7
59	8
60	10
61	17
62	19
63	28
64	41
65	50
66	52
67	59
68	61
69	62
70	68