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.

A078126 Negative determinant of n X n matrix M_{i,j}=1 if i=j or i+j=1 (mod 2).

Table of values

n a(n)
0 -1
1 -1
2 0
3 1
4 3
5 5
6 8
7 11
8 15
9 19
10 24
11 29
12 35
13 41
14 48
15 55
16 63
17 71
18 80
19 89
20 99
21 109
22 120
23 131
24 143
25 155
26 168
27 181
28 195
29 209
30 224
31 239
32 255
33 271
34 288
35 305
36 323
37 341
38 360
39 379
40 399
41 419
42 440
43 461
44 483
45 505
46 528
47 551
48 575
49 599
50 624
51 649
52 675
53 701
54 728
55 755
56 783
57 811

List of values

[-1, -1, 0, 1, 3, 5, 8, 11, 15, 19, 24, 29, 35, 41, 48, 55, 63, 71, 80, 89, 99, 109, 120, 131, 143, 155, 168, 181, 195, 209, 224, 239, 255, 271, 288, 305, 323, 341, 360, 379, 399, 419, 440, 461, 483, 505, 528, 551, 575, 599, 624, 649, 675, 701, 728, 755, 783, 811]