A323388 - cp's OEIS frontend

A323388 a(n) = b(n+1)/b(n) - 1 where b(1)=3 and b(k) = b(k-1) + lcm(floor(sqrt(3)*k), b(k-1)).

n	a(n)
1	1
2	5
3	1
4	1
5	5
6	1
7	13
8	5
9	17
10	19
11	1
12	11
13	1
14	5
15	1
16	29
17	31
18	1
19	17
20	1
21	19
22	13
23	41
24	43
25	1
26	23
27	1
28	1
29	17
30	53
31	1
32	19
33	29
34	1
35	31
36	1
37	13
38	67
39	23
40	71
41	1
42	37
43	1
44	1
45	79
46	1
47	83
48	1
49	43
50	1
51	1
52	13
53	31
54	1
55	1
56	1
57	1
58	1
59	103
60	1
61	107
62	109
63	1
64	1
65	1
66	29
67	1
68	1
69	1
70	61
71	1
72	1

[1, 5, 1, 1, 5, 1, 13, 5, 17, 19, 1, 11, 1, 5, 1, 29, 31, 1, 17, 1, 19, 13, 41, 43, 1, 23, 1, 1, 17, 53, 1, 19, 29, 1, 31, 1, 13, 67, 23, 71, 1, 37, 1, 1, 79, 1, 83, 1, 43, 1, 1, 13, 31, 1, 1, 1, 1, 1, 103, 1, 107, 109, 1, 1, 1, 29, 1, 1, 1, 61, 1, 1]

cp's OEIS Frontend

A323388 a(n) = b(n+1)/b(n) - 1 where b(1)=3 and b(k) = b(k-1) + lcm(floor(sqrt(3)*k), b(k-1)).

Table of values

List of values

n	a(n)
1	1
2	5
3	1
4	1
5	5
6	1
7	13
8	5
9	17
10	19
11	1
12	11
13	1
14	5
15	1
16	29
17	31
18	1
19	17
20	1
21	19
22	13
23	41
24	43
25	1
26	23
27	1
28	1
29	17
30	53
31	1
32	19
33	29
34	1
35	31
36	1
37	13
38	67
39	23
40	71
41	1
42	37
43	1
44	1
45	79
46	1
47	83
48	1
49	43
50	1
51	1
52	13
53	31
54	1
55	1
56	1
57	1
58	1
59	103
60	1
61	107
62	109
63	1
64	1
65	1
66	29
67	1
68	1
69	1
70	61
71	1
72	1

n	a(n)
1	1
2	5
3	1
4	1
5	5
6	1
7	13
8	5
9	17
10	19
11	1
12	11
13	1
14	5
15	1
16	29
17	31
18	1
19	17
20	1
21	19
22	13
23	41
24	43
25	1
26	23
27	1
28	1
29	17
30	53
31	1
32	19
33	29
34	1
35	31
36	1
37	13
38	67
39	23
40	71
41	1
42	37
43	1
44	1
45	79
46	1
47	83
48	1
49	43
50	1
51	1
52	13
53	31
54	1
55	1
56	1
57	1
58	1
59	103
60	1
61	107
62	109
63	1
64	1
65	1
66	29
67	1
68	1
69	1
70	61
71	1
72	1

n	a(n)
1	1
2	5
3	1
4	1
5	5
6	1
7	13
8	5
9	17
10	19
11	1
12	11
13	1
14	5
15	1
16	29
17	31
18	1
19	17
20	1
21	19
22	13
23	41
24	43
25	1
26	23
27	1
28	1
29	17
30	53
31	1
32	19
33	29
34	1
35	31
36	1
37	13
38	67
39	23
40	71
41	1
42	37
43	1
44	1
45	79
46	1
47	83
48	1
49	43
50	1
51	1
52	13
53	31
54	1
55	1
56	1
57	1
58	1
59	103
60	1
61	107
62	109
63	1
64	1
65	1
66	29
67	1
68	1
69	1
70	61
71	1
72	1