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.

A037012 Triangle read by rows; row 0 is 0; the n-th row for n>0 contains the coefficients in the expansion of (1-x)*(1+x)^(n-1).

Table of values

n a(n)
0 0
1 1
2 -1
3 1
4 0
5 -1
6 1
7 1
8 -1
9 -1
10 1
11 2
12 0
13 -2
14 -1
15 1
16 3
17 2
18 -2
19 -3
20 -1
21 1
22 4
23 5
24 0
25 -5
26 -4
27 -1
28 1
29 5
30 9
31 5
32 -5
33 -9
34 -5
35 -1
36 1
37 6
38 14
39 14
40 0
41 -14
42 -14
43 -6
44 -1
45 1
46 7
47 20
48 28
49 14
50 -14
51 -28
52 -20
53 -7
54 -1
55 1
56 8
57 27
58 48
59 42
60 0
61 -42
62 -48
63 -27
64 -8
65 -1
66 1
67 9
68 35
69 75
70 90
71 42
72 -42
73 -90

List of values

[0, 1, -1, 1, 0, -1, 1, 1, -1, -1, 1, 2, 0, -2, -1, 1, 3, 2, -2, -3, -1, 1, 4, 5, 0, -5, -4, -1, 1, 5, 9, 5, -5, -9, -5, -1, 1, 6, 14, 14, 0, -14, -14, -6, -1, 1, 7, 20, 28, 14, -14, -28, -20, -7, -1, 1, 8, 27, 48, 42, 0, -42, -48, -27, -8, -1, 1, 9, 35, 75, 90, 42, -42, -90]