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.

A334874 a(n) = sigma(1) - tau(2) + sigma(3) - tau(4) + sigma(5) - tau(6) + ... - (up to n).

Table of values

n a(n)
1 1
2 -1
3 3
4 0
5 6
6 2
7 10
8 6
9 19
10 15
11 27
12 21
13 35
14 31
15 55
16 50
17 68
18 62
19 82
20 76
21 108
22 104
23 128
24 120
25 151
26 147
27 187
28 181
29 211
30 203
31 235
32 229
33 277
34 273
35 321
36 312
37 350
38 346
39 402
40 394
41 436
42 428
43 472
44 466
45 544
46 540
47 588
48 578
49 635
50 629
51 701
52 695
53 749
54 741
55 813
56 805
57 885
58 881
59 941
60 929

List of values

[1, -1, 3, 0, 6, 2, 10, 6, 19, 15, 27, 21, 35, 31, 55, 50, 68, 62, 82, 76, 108, 104, 128, 120, 151, 147, 187, 181, 211, 203, 235, 229, 277, 273, 321, 312, 350, 346, 402, 394, 436, 428, 472, 466, 544, 540, 588, 578, 635, 629, 701, 695, 749, 741, 813, 805, 885, 881, 941, 929]