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.

A321165 Sum of distinct products i*j with 1 <= i, j <= n.

Table of values

n a(n)
1 1
2 7
3 25
4 61
5 136
6 244
7 440
8 680
9 1022
10 1472
11 2198
12 2882
13 4065
14 5241
15 6681
16 8265
17 10866
18 13116
19 16726
20 19786
21 23566
22 27922
23 34270
24 38902
25 45502
26 52600
27 60430
28 68326
29 80941
30 89671
31 105047
32 116855
33 130913
34 146519
35 163214
36 177002
37 203013
38 224673
39 247605
40 268005
41 303306

List of values

[1, 7, 25, 61, 136, 244, 440, 680, 1022, 1472, 2198, 2882, 4065, 5241, 6681, 8265, 10866, 13116, 16726, 19786, 23566, 27922, 34270, 38902, 45502, 52600, 60430, 68326, 80941, 89671, 105047, 116855, 130913, 146519, 163214, 177002, 203013, 224673, 247605, 268005, 303306]