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.

A104608 Write the natural numbers in base 4 in a triangle with k digits in the k-th row, as shown below. Sequence gives the leading diagonal.

Table of values

n a(n)
1 1
2 3
3 1
4 1
5 1
6 0
7 1
8 2
9 1
10 1
11 0
12 0
13 2
14 1
15 2
16 3
17 1
18 3
19 1
20 2
21 2
22 1
23 1
24 1
25 2
26 0
27 0
28 2
29 1
30 0
31 2
32 2
33 2
34 1
35 0
36 2
37 0
38 0
39 3
40 3
41 2
42 2
43 0
44 1
45 1
46 0
47 1
48 0
49 1
50 1
51 1
52 1
53 1
54 1
55 1
56 2
57 3
58 2
59 1
60 1
61 2
62 2
63 3
64 1
65 1
66 3
67 2
68 0
69 2
70 2
71 1
72 0
73 1
74 2
75 2
76 2
77 3
78 2
79 2
80 2
81 3
82 3
83 3
84 3
85 3
86 0
87 0
88 1
89 3
90 3
91 2
92 2
93 2
94 3
95 3
96 3
97 2
98 3
99 0
100 1
101 1
102 2
103 1
104 1
105 2

List of values

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