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.

A381059 Array read by ascending antidiagonals: A(n,k) = numerator(binomial(n-1/2,k)) with k >=0.

Table of values

n a(n)
0 1
1 1
2 -1
3 1
4 1
5 3
6 1
7 3
8 -1
9 -5
10 1
11 5
12 3
13 1
14 35
15 1
16 7
17 15
18 -1
19 -5
20 -63
21 1
22 9
23 35
24 5
25 3
26 7
27 231
28 1
29 11
30 63
31 35
32 -5
33 -3
34 -21
35 -429
36 1
37 13
38 99
39 105
40 35
41 3
42 7
43 33
44 6435
45 1
46 15
47 143
48 231
49 315
50 -7
51 -5
52 -9
53 -429
54 -12155
55 1
56 17
57 195
58 429
59 1155
60 63
61 7
62 5
63 99
64 715
65 46189

List of values

[1, 1, -1, 1, 1, 3, 1, 3, -1, -5, 1, 5, 3, 1, 35, 1, 7, 15, -1, -5, -63, 1, 9, 35, 5, 3, 7, 231, 1, 11, 63, 35, -5, -3, -21, -429, 1, 13, 99, 105, 35, 3, 7, 33, 6435, 1, 15, 143, 231, 315, -7, -5, -9, -429, -12155, 1, 17, 195, 429, 1155, 63, 7, 5, 99, 715, 46189]