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.

A346870 Sum of all divisors, except the smallest and the largest of every number, of the first n positive even numbers.

Table of values

n a(n)
1 0
2 2
3 7
4 13
5 20
6 35
7 44
8 58
9 78
10 99
11 112
12 147
13 162
14 189
15 230
16 260
17 279
18 333
19 354
20 403
21 456
22 495
23 520
24 595
25 637
26 682
27 747
28 810
29 841
30 948
31 981
32 1043
33 1120
34 1177
35 1250
36 1372
37 1411
38 1474
39 1563
40 1668
41 1711
42 1850
43 1895
44 1986
45 2129
46 2204
47 2253
48 2408
49 2480
50 2596
51 2709
52 2814

List of values

[0, 2, 7, 13, 20, 35, 44, 58, 78, 99, 112, 147, 162, 189, 230, 260, 279, 333, 354, 403, 456, 495, 520, 595, 637, 682, 747, 810, 841, 948, 981, 1043, 1120, 1177, 1250, 1372, 1411, 1474, 1563, 1668, 1711, 1850, 1895, 1986, 2129, 2204, 2253, 2408, 2480, 2596, 2709, 2814]