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.

A074787 Sum of squares of the number of unitary divisors of k from 1 to n.

Table of values

n a(n)
1 1
2 5
3 9
4 13
5 17
6 33
7 37
8 41
9 45
10 61
11 65
12 81
13 85
14 101
15 117
16 121
17 125
18 141
19 145
20 161
21 177
22 193
23 197
24 213
25 217
26 233
27 237
28 253
29 257
30 321
31 325
32 329
33 345
34 361
35 377
36 393
37 397
38 413
39 429
40 445
41 449
42 513
43 517
44 533
45 549
46 565
47 569
48 585
49 589
50 605
51 621
52 637
53 641
54 657
55 673

List of values

[1, 5, 9, 13, 17, 33, 37, 41, 45, 61, 65, 81, 85, 101, 117, 121, 125, 141, 145, 161, 177, 193, 197, 213, 217, 233, 237, 253, 257, 321, 325, 329, 345, 361, 377, 393, 397, 413, 429, 445, 449, 513, 517, 533, 549, 565, 569, 585, 589, 605, 621, 637, 641, 657, 673]