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.

A104609 Write the natural numbers in base 5 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 0
4 2
5 2
6 2
7 1
8 0
9 1
10 0
11 1
12 1
13 3
14 1
15 2
16 1
17 2
18 2
19 4
20 3
21 3
22 3
23 4
24 4
25 3
26 0
27 0
28 0
29 4
30 1
31 2
32 0
33 1
34 2
35 2
36 3
37 2
38 1
39 3
40 3
41 2
42 2
43 1
44 1
45 4
46 2
47 0
48 2
49 2
50 1
51 4
52 0
53 4
54 3
55 3
56 2
57 3
58 3
59 4
60 4
61 2
62 4
63 2
64 3
65 4
66 3
67 4
68 0
69 1
70 1
71 0
72 1
73 0
74 1
75 1
76 0
77 1
78 1
79 1
80 1
81 1
82 2
83 1
84 1
85 1
86 2
87 4
88 2
89 1
90 1
91 2
92 2
93 3
94 1
95 1
96 3
97 1
98 4
99 1
100 1
101 4
102 1
103 4
104 1
105 2

List of values

[1, 3, 0, 2, 2, 2, 1, 0, 1, 0, 1, 1, 3, 1, 2, 1, 2, 2, 4, 3, 3, 3, 4, 4, 3, 0, 0, 0, 4, 1, 2, 0, 1, 2, 2, 3, 2, 1, 3, 3, 2, 2, 1, 1, 4, 2, 0, 2, 2, 1, 4, 0, 4, 3, 3, 2, 3, 3, 4, 4, 2, 4, 2, 3, 4, 3, 4, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 4, 2, 1, 1, 2, 2, 3, 1, 1, 3, 1, 4, 1, 1, 4, 1, 4, 1, 2]