A323386 - cp's OEIS frontend

A323386 a(n) = b(n+1)/b(n) - 1 where b(1)=2 and b(k) = b(k-1) + lcm(floor(sqrt(2)*k),b(k-1)).

n	a(n)
1	1
2	1
3	5
4	7
5	1
6	3
7	11
8	1
9	7
10	5
11	1
12	1
13	19
14	7
15	11
16	1
17	5
18	13
19	1
20	29
21	31
22	1
23	11
24	1
25	1
26	19
27	13
28	41
29	1
30	43
31	1
32	23
33	1
34	1
35	1
36	13
37	53
38	1
39	1
40	19
41	59
42	1
43	31
44	1
45	13
46	1
47	67
48	23
49	1
50	1
51	73
52	1
53	19
54	1
55	79
56	1
57	41
58	83
59	1
60	43
61	29
62	89
63	1
64	13
65	31
66	47
67	1
68	97
69	1
70	1
71	101
72	103

[1, 1, 5, 7, 1, 3, 11, 1, 7, 5, 1, 1, 19, 7, 11, 1, 5, 13, 1, 29, 31, 1, 11, 1, 1, 19, 13, 41, 1, 43, 1, 23, 1, 1, 1, 13, 53, 1, 1, 19, 59, 1, 31, 1, 13, 1, 67, 23, 1, 1, 73, 1, 19, 1, 79, 1, 41, 83, 1, 43, 29, 89, 1, 13, 31, 47, 1, 97, 1, 1, 101, 103]

cp's OEIS Frontend

A323386 a(n) = b(n+1)/b(n) - 1 where b(1)=2 and b(k) = b(k-1) + lcm(floor(sqrt(2)*k),b(k-1)).

Table of values

List of values

n	a(n)
1	1
2	1
3	5
4	7
5	1
6	3
7	11
8	1
9	7
10	5
11	1
12	1
13	19
14	7
15	11
16	1
17	5
18	13
19	1
20	29
21	31
22	1
23	11
24	1
25	1
26	19
27	13
28	41
29	1
30	43
31	1
32	23
33	1
34	1
35	1
36	13
37	53
38	1
39	1
40	19
41	59
42	1
43	31
44	1
45	13
46	1
47	67
48	23
49	1
50	1
51	73
52	1
53	19
54	1
55	79
56	1
57	41
58	83
59	1
60	43
61	29
62	89
63	1
64	13
65	31
66	47
67	1
68	97
69	1
70	1
71	101
72	103

n	a(n)
1	1
2	1
3	5
4	7
5	1
6	3
7	11
8	1
9	7
10	5
11	1
12	1
13	19
14	7
15	11
16	1
17	5
18	13
19	1
20	29
21	31
22	1
23	11
24	1
25	1
26	19
27	13
28	41
29	1
30	43
31	1
32	23
33	1
34	1
35	1
36	13
37	53
38	1
39	1
40	19
41	59
42	1
43	31
44	1
45	13
46	1
47	67
48	23
49	1
50	1
51	73
52	1
53	19
54	1
55	79
56	1
57	41
58	83
59	1
60	43
61	29
62	89
63	1
64	13
65	31
66	47
67	1
68	97
69	1
70	1
71	101
72	103

n	a(n)
1	1
2	1
3	5
4	7
5	1
6	3
7	11
8	1
9	7
10	5
11	1
12	1
13	19
14	7
15	11
16	1
17	5
18	13
19	1
20	29
21	31
22	1
23	11
24	1
25	1
26	19
27	13
28	41
29	1
30	43
31	1
32	23
33	1
34	1
35	1
36	13
37	53
38	1
39	1
40	19
41	59
42	1
43	31
44	1
45	13
46	1
47	67
48	23
49	1
50	1
51	73
52	1
53	19
54	1
55	79
56	1
57	41
58	83
59	1
60	43
61	29
62	89
63	1
64	13
65	31
66	47
67	1
68	97
69	1
70	1
71	101
72	103