cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A065936 a(n) is the integer (reduced squarefree) under the square root obtained when the inverse of a variant of Minkowski's question mark function is applied to the n-th ratio A007305(n+1)/A007306(n+1) in the left-hand subtree of Stern-Brocot tree and zero when it results a rational value.

Table of values

n a(n)
1 0
2 5
3 5
4 0
5 2
6 2
7 0
8 2
9 3
10 0
11 3
12 3
13 0
14 3
15 2
16 5
17 13
18 17
19 2
20 17
21 37
22 5
23 13
24 13
25 5
26 37
27 17
28 2
29 17
30 13
31 5
32 3
33 17
34 3
35 37
36 21
37 13
38 10
39 37
40 3
41 401
42 6
43 13
44 10
45 401
46 0
47 17
48 17
49 0
50 401
51 10
52 13
53 6
54 401
55 3
56 37
57 10
58 13
59 21
60 37
61 3
62 17
63 3
64 0
65 37
66 10
67 0
68 401
69 506
70 17
71 5
72 401
73 37
74 21610
75 730
76 5
77 1373

List of values

[0, 5, 5, 0, 2, 2, 0, 2, 3, 0, 3, 3, 0, 3, 2, 5, 13, 17, 2, 17, 37, 5, 13, 13, 5, 37, 17, 2, 17, 13, 5, 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, 10, 13, 21, 37, 3, 17, 3, 0, 37, 10, 0, 401, 506, 17, 5, 401, 37, 21610, 730, 5, 1373]