A065937 - cp's OEIS frontend

A065937 a(n) is the integer (reduced squarefree) under the square root obtained when the inverse of Minkowski's question mark function is applied to the n-th ratio A007305(n+1)/A047679(n-1) in the full Stern-Brocot tree and zero when it results a rational value.

n	a(n)
1	0
2	0
3	0
4	5
5	5
6	0
7	0
8	0
9	2
10	2
11	0
12	5
13	5
14	0
15	0
16	2
17	3
18	0
19	3
20	3
21	0
22	3
23	2
24	0
25	2
26	2
27	0
28	5
29	5
30	0
31	0
32	5
33	13
34	17
35	2
36	17
37	37
38	5
39	13
40	13
41	5
42	37
43	17
44	2
45	17
46	13
47	5
48	2
49	3
50	0
51	3
52	3
53	0
54	3
55	2
56	0
57	2
58	2
59	0
60	5
61	5
62	0
63	0
64	3
65	17
66	3
67	37
68	21
69	13
70	10
71	37
72	3
73	401
74	6
75	13
76	10
77	401
78	0
79	17
80	17
81	0
82	401
83	10
84	13
85	6
86	401
87	3
88	37

[0, 0, 0, 5, 5, 0, 0, 0, 2, 2, 0, 5, 5, 0, 0, 2, 3, 0, 3, 3, 0, 3, 2, 0, 2, 2, 0, 5, 5, 0, 0, 5, 13, 17, 2, 17, 37, 5, 13, 13, 5, 37, 17, 2, 17, 13, 5, 2, 3, 0, 3, 3, 0, 3, 2, 0, 2, 2, 0, 5, 5, 0, 0, 3, 17, 3, 37, 21, 13, 10, 37, 3, 401, 6, 13, 10, 401, 0, 17, 17, 0, 401, 10, 13, 6, 401, 3, 37]

cp's OEIS Frontend

A065937 a(n) is the integer (reduced squarefree) under the square root obtained when the inverse of Minkowski's question mark function is applied to the n-th ratio A007305(n+1)/A047679(n-1) in the full Stern-Brocot tree and zero when it results a rational value.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	5
5	5
6	0
7	0
8	0
9	2
10	2
11	0
12	5
13	5
14	0
15	0
16	2
17	3
18	0
19	3
20	3
21	0
22	3
23	2
24	0
25	2
26	2
27	0
28	5
29	5
30	0
31	0
32	5
33	13
34	17
35	2
36	17
37	37
38	5
39	13
40	13
41	5
42	37
43	17
44	2
45	17
46	13
47	5
48	2
49	3
50	0
51	3
52	3
53	0
54	3
55	2
56	0
57	2
58	2
59	0
60	5
61	5
62	0
63	0
64	3
65	17
66	3
67	37
68	21
69	13
70	10
71	37
72	3
73	401
74	6
75	13
76	10
77	401
78	0
79	17
80	17
81	0
82	401
83	10
84	13
85	6
86	401
87	3
88	37

n	a(n)
1	0
2	0
3	0
4	5
5	5
6	0
7	0
8	0
9	2
10	2
11	0
12	5
13	5
14	0
15	0
16	2
17	3
18	0
19	3
20	3
21	0
22	3
23	2
24	0
25	2
26	2
27	0
28	5
29	5
30	0
31	0
32	5
33	13
34	17
35	2
36	17
37	37
38	5
39	13
40	13
41	5
42	37
43	17
44	2
45	17
46	13
47	5
48	2
49	3
50	0
51	3
52	3
53	0
54	3
55	2
56	0
57	2
58	2
59	0
60	5
61	5
62	0
63	0
64	3
65	17
66	3
67	37
68	21
69	13
70	10
71	37
72	3
73	401
74	6
75	13
76	10
77	401
78	0
79	17
80	17
81	0
82	401
83	10
84	13
85	6
86	401
87	3
88	37

n	a(n)
1	0
2	0
3	0
4	5
5	5
6	0
7	0
8	0
9	2
10	2
11	0
12	5
13	5
14	0
15	0
16	2
17	3
18	0
19	3
20	3
21	0
22	3
23	2
24	0
25	2
26	2
27	0
28	5
29	5
30	0
31	0
32	5
33	13
34	17
35	2
36	17
37	37
38	5
39	13
40	13
41	5
42	37
43	17
44	2
45	17
46	13
47	5
48	2
49	3
50	0
51	3
52	3
53	0
54	3
55	2
56	0
57	2
58	2
59	0
60	5
61	5
62	0
63	0
64	3
65	17
66	3
67	37
68	21
69	13
70	10
71	37
72	3
73	401
74	6
75	13
76	10
77	401
78	0
79	17
80	17
81	0
82	401
83	10
84	13
85	6
86	401
87	3
88	37