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.

A134449 Sum of even products minus sum of odd products of different pairs of numbers from 1 to n.

Table of values

n a(n)
1 0
2 2
3 5
4 29
5 39
6 129
7 150
8 374
9 410
10 860
11 915
12 1707
13 1785
14 3059
15 3164
16 5084
17 5220
18 7974
19 8145
20 11945
21 12155
22 17237
23 17490
24 24114
25 24414
26 32864
27 33215
28 43799
29 44205
30 57255
31 57720
32 73592
33 74120
34 93194
35 93789
36 116469
37 117135
38 143849
39 144590
40 175790

List of values

[0, 2, 5, 29, 39, 129, 150, 374, 410, 860, 915, 1707, 1785, 3059, 3164, 5084, 5220, 7974, 8145, 11945, 12155, 17237, 17490, 24114, 24414, 32864, 33215, 43799, 44205, 57255, 57720, 73592, 74120, 93194, 93789, 116469, 117135, 143849, 144590, 175790]