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.

A306287 Irregular triangle T(n,k), 1 <= n, 1 <= k <= (1/6)*(4+5*2^(2*n)), read by rows: T(n,k) determines absolute directions along the perimeter of the n-th Y-type Hilbert Tree.

Table of values

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

List of values

[1, 0, 3, 2, 1, 2, 1, 1, 0, 3, 0, 1, 0, 3, 3, 2, 3, 2, 1, 2, 1, 0, 1, 2, 2, 3, 2, 1, 1, 0, 1, 2, 1, 1, 0, 3, 0, 1, 0, 3, 3, 2, 3, 0, 0, 0, 1, 2, 1, 1, 0, 3, 0, 1, 0, 3, 3, 2, 3, 0, 3, 3, 2, 1, 2, 2, 3, 0, 3, 2, 3, 2, 1, 2, 1, 0, 1, 2, 2, 3, 2, 1, 1, 1, 0]