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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.

A352112 In the primorial base expansion of n, replace each place value, say A002110(k) with k >= 0, by (-1)^k * A002110(k).

Table of values

n a(n)
0 0
1 1
2 -2
3 -1
4 -4
5 -3
6 6
7 7
8 4
9 5
10 2
11 3
12 12
13 13
14 10
15 11
16 8
17 9
18 18
19 19
20 16
21 17
22 14
23 15
24 24
25 25
26 22
27 23
28 20
29 21
30 -30
31 -29
32 -32
33 -31
34 -34
35 -33
36 -24
37 -23
38 -26
39 -25
40 -28
41 -27
42 -18
43 -17
44 -20
45 -19
46 -22
47 -21
48 -12
49 -11
50 -14
51 -13
52 -16
53 -15
54 -6
55 -5
56 -8
57 -7
58 -10
59 -9
60 -60

List of values

[0, 1, -2, -1, -4, -3, 6, 7, 4, 5, 2, 3, 12, 13, 10, 11, 8, 9, 18, 19, 16, 17, 14, 15, 24, 25, 22, 23, 20, 21, -30, -29, -32, -31, -34, -33, -24, -23, -26, -25, -28, -27, -18, -17, -20, -19, -22, -21, -12, -11, -14, -13, -16, -15, -6, -5, -8, -7, -10, -9, -60]

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