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.

A055682 a(n) = floor(n*sqrt(n)) - sigma(n), where sigma(n) is the sum of the divisors of n (A000203).

Table of values

n a(n)
1 0
2 -1
3 1
4 1
5 5
6 2
7 10
8 7
9 14
10 13
11 24
12 13
13 32
14 28
15 34
16 33
17 52
18 37
19 62
20 47
21 64
22 67
23 86
24 57
25 94
26 90
27 100
28 92
29 126
30 92
31 140
32 118
33 141
34 144
35 159
36 125
37 187
38 174
39 187
40 162
41 220
42 176
43 237
44 207
45 223
46 239
47 274
48 208
49 286
50 260
51 292
52 276
53 331
54 276
55 335
56 299

List of values

[0, -1, 1, 1, 5, 2, 10, 7, 14, 13, 24, 13, 32, 28, 34, 33, 52, 37, 62, 47, 64, 67, 86, 57, 94, 90, 100, 92, 126, 92, 140, 118, 141, 144, 159, 125, 187, 174, 187, 162, 220, 176, 237, 207, 223, 239, 274, 208, 286, 260, 292, 276, 331, 276, 335, 299]