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.

A351406 For all a(2n) the cumulative sum of the odd digits used so far in the sequence [including a(2n)] is twice the cumulative sum of the even digits used so far in the sequence [including a(2n)]. This is the lexicographically earliest sequence of distinct numbers >= 0 with this property.

Table of values

n a(n)
1 0
2 123
3 1
4 23
5 2
6 13
7 3
8 12
9 4
10 17
11 5
12 34
13 6
14 39
15 7
16 14
17 8
18 79
19 9
20 36
21 10
22 32
23 11
24 112
25 15
26 114
27 16
28 119
29 18
30 159
31 19
32 116
33 20
34 31
35 21
36 27
37 22
38 35
39 24
40 57
41 25
42 47
43 26
44 97
45 28
46 1199
47 29
48 43
49 30
50 45
51 33
52 141
53 37
54 158
55 38
56 139
57 40
58 53
59 41
60 70
61 42
62 75
63 44
64 709
65 46

List of values

[0, 123, 1, 23, 2, 13, 3, 12, 4, 17, 5, 34, 6, 39, 7, 14, 8, 79, 9, 36, 10, 32, 11, 112, 15, 114, 16, 119, 18, 159, 19, 116, 20, 31, 21, 27, 22, 35, 24, 57, 25, 47, 26, 97, 28, 1199, 29, 43, 30, 45, 33, 141, 37, 158, 38, 139, 40, 53, 41, 70, 42, 75, 44, 709, 46]