A286942 - cp's OEIS frontend

A286942 Irregular triangle read by rows: numbers 1 <= k <= (A002110(n) - 1) where gcd(k, A002110(n - 1)) = 1.

n	a(n)
1	1
2	2
3	1
4	3
5	5
6	1
7	5
8	7
9	11
10	13
11	17
12	19
13	23
14	25
15	29
16	1
17	7
18	11
19	13
20	17
21	19
22	23
23	29
24	31
25	37
26	41
27	43
28	47
29	49
30	53
31	59
32	61
33	67
34	71
35	73
36	77
37	79
38	83
39	89
40	91
41	97
42	101
43	103
44	107
45	109
46	113
47	119
48	121
49	127
50	131
51	133
52	137
53	139
54	143
55	149
56	151
57	157
58	161
59	163
60	167
61	169
62	173

[1, 2, 1, 3, 5, 1, 5, 7, 11, 13, 17, 19, 23, 25, 29, 1, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 49, 53, 59, 61, 67, 71, 73, 77, 79, 83, 89, 91, 97, 101, 103, 107, 109, 113, 119, 121, 127, 131, 133, 137, 139, 143, 149, 151, 157, 161, 163, 167, 169, 173]

cp's OEIS Frontend

A286942 Irregular triangle read by rows: numbers 1 <= k <= (A002110(n) - 1) where gcd(k, A002110(n - 1)) = 1.

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	3
5	5
6	1
7	5
8	7
9	11
10	13
11	17
12	19
13	23
14	25
15	29
16	1
17	7
18	11
19	13
20	17
21	19
22	23
23	29
24	31
25	37
26	41
27	43
28	47
29	49
30	53
31	59
32	61
33	67
34	71
35	73
36	77
37	79
38	83
39	89
40	91
41	97
42	101
43	103
44	107
45	109
46	113
47	119
48	121
49	127
50	131
51	133
52	137
53	139
54	143
55	149
56	151
57	157
58	161
59	163
60	167
61	169
62	173

n	a(n)
1	1
2	2
3	1
4	3
5	5
6	1
7	5
8	7
9	11
10	13
11	17
12	19
13	23
14	25
15	29
16	1
17	7
18	11
19	13
20	17
21	19
22	23
23	29
24	31
25	37
26	41
27	43
28	47
29	49
30	53
31	59
32	61
33	67
34	71
35	73
36	77
37	79
38	83
39	89
40	91
41	97
42	101
43	103
44	107
45	109
46	113
47	119
48	121
49	127
50	131
51	133
52	137
53	139
54	143
55	149
56	151
57	157
58	161
59	163
60	167
61	169
62	173

n	a(n)
1	1
2	2
3	1
4	3
5	5
6	1
7	5
8	7
9	11
10	13
11	17
12	19
13	23
14	25
15	29
16	1
17	7
18	11
19	13
20	17
21	19
22	23
23	29
24	31
25	37
26	41
27	43
28	47
29	49
30	53
31	59
32	61
33	67
34	71
35	73
36	77
37	79
38	83
39	89
40	91
41	97
42	101
43	103
44	107
45	109
46	113
47	119
48	121
49	127
50	131
51	133
52	137
53	139
54	143
55	149
56	151
57	157
58	161
59	163
60	167
61	169
62	173