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.

A370903 Partial alternating sums of the powerful part function (A057521).

Table of values

n a(n)
1 1
2 0
3 1
4 -3
5 -2
6 -3
7 -2
8 -10
9 -1
10 -2
11 -1
12 -5
13 -4
14 -5
15 -4
16 -20
17 -19
18 -28
19 -27
20 -31
21 -30
22 -31
23 -30
24 -38
25 -13
26 -14
27 13
28 9
29 10
30 9
31 10
32 -22
33 -21
34 -22
35 -21
36 -57
37 -56
38 -57
39 -56
40 -64
41 -63
42 -64
43 -63
44 -67
45 -58
46 -59
47 -58
48 -74
49 -25
50 -50
51 -49
52 -53
53 -52
54 -79
55 -78
56 -86
57 -85

List of values

[1, 0, 1, -3, -2, -3, -2, -10, -1, -2, -1, -5, -4, -5, -4, -20, -19, -28, -27, -31, -30, -31, -30, -38, -13, -14, 13, 9, 10, 9, 10, -22, -21, -22, -21, -57, -56, -57, -56, -64, -63, -64, -63, -67, -58, -59, -58, -74, -25, -50, -49, -53, -52, -79, -78, -86, -85]