A214228 - cp's OEIS frontend

A214228 a(n) = gcd(r,2n+1) where r is 1 + (A143608(i-1) mod (2n+1)) and A143608(i) is the first zero mod 2*n+1 other than i=0.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	5
8	1
9	1
10	7
11	1
12	1
13	1
14	1
15	1
16	1
17	7
18	1
19	13
20	1
21	1
22	5
23	1
24	1
25	3
26	1
27	5
28	1
29	1
30	1
31	7
32	1
33	1
34	23
35	1
36	1
37	25
38	7
39	1
40	1
41	1
42	5
43	29
44	1
45	7
46	31
47	5
48	1
49	1
50	1
51	1
52	35
53	1
54	1
55	37
56	1
57	23
58	13
59	7
60	1
61	41
62	1
63	1
64	1
65	1
66	7
67	5
68	1
69	1
70	47
71	13
72	1
73	49
74	1
75	1
76	9
77	31
78	1
79	53

[1, 1, 1, 1, 1, 1, 5, 1, 1, 7, 1, 1, 1, 1, 1, 1, 7, 1, 13, 1, 1, 5, 1, 1, 3, 1, 5, 1, 1, 1, 7, 1, 1, 23, 1, 1, 25, 7, 1, 1, 1, 5, 29, 1, 7, 31, 5, 1, 1, 1, 1, 35, 1, 1, 37, 1, 23, 13, 7, 1, 41, 1, 1, 1, 1, 7, 5, 1, 1, 47, 13, 1, 49, 1, 1, 9, 31, 1, 53]

cp's OEIS Frontend

A214228 a(n) = gcd(r,2n+1) where r is 1 + (A143608(i-1) mod (2n+1)) and A143608(i) is the first zero mod 2*n+1 other than i=0.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	5
8	1
9	1
10	7
11	1
12	1
13	1
14	1
15	1
16	1
17	7
18	1
19	13
20	1
21	1
22	5
23	1
24	1
25	3
26	1
27	5
28	1
29	1
30	1
31	7
32	1
33	1
34	23
35	1
36	1
37	25
38	7
39	1
40	1
41	1
42	5
43	29
44	1
45	7
46	31
47	5
48	1
49	1
50	1
51	1
52	35
53	1
54	1
55	37
56	1
57	23
58	13
59	7
60	1
61	41
62	1
63	1
64	1
65	1
66	7
67	5
68	1
69	1
70	47
71	13
72	1
73	49
74	1
75	1
76	9
77	31
78	1
79	53

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	5
8	1
9	1
10	7
11	1
12	1
13	1
14	1
15	1
16	1
17	7
18	1
19	13
20	1
21	1
22	5
23	1
24	1
25	3
26	1
27	5
28	1
29	1
30	1
31	7
32	1
33	1
34	23
35	1
36	1
37	25
38	7
39	1
40	1
41	1
42	5
43	29
44	1
45	7
46	31
47	5
48	1
49	1
50	1
51	1
52	35
53	1
54	1
55	37
56	1
57	23
58	13
59	7
60	1
61	41
62	1
63	1
64	1
65	1
66	7
67	5
68	1
69	1
70	47
71	13
72	1
73	49
74	1
75	1
76	9
77	31
78	1
79	53

cp's OEIS Frontend

A214228 a(n) = gcd(r,2*n+1) where r is 1 + (A143608(i-1) mod (2*n+1)) and A143608(i) is the first zero mod 2*n+1 other than i=0.

Table of values

List of values

A214228 a(n) = gcd(r,2n+1) where r is 1 + (A143608(i-1) mod (2n+1)) and A143608(i) is the first zero mod 2*n+1 other than i=0.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	5
8	1
9	1
10	7
11	1
12	1
13	1
14	1
15	1
16	1
17	7
18	1
19	13
20	1
21	1
22	5
23	1
24	1
25	3
26	1
27	5
28	1
29	1
30	1
31	7
32	1
33	1
34	23
35	1
36	1
37	25
38	7
39	1
40	1
41	1
42	5
43	29
44	1
45	7
46	31
47	5
48	1
49	1
50	1
51	1
52	35
53	1
54	1
55	37
56	1
57	23
58	13
59	7
60	1
61	41
62	1
63	1
64	1
65	1
66	7
67	5
68	1
69	1
70	47
71	13
72	1
73	49
74	1
75	1
76	9
77	31
78	1
79	53