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.

A287703 Triangle read by rows, numerators of T(n,k) = (-1)^n*binomial(n-1,k)*Bernoulli(n+k)/ (n+k) for n>=1, 0<=k<=n-1.

Table of values

n a(n)
1 1
2 1
3 0
4 0
5 1
6 0
7 -1
8 0
9 1
10 0
11 0
12 -1
13 0
14 1
15 0
16 1
17 0
18 -1
19 0
20 5
21 0
22 0
23 1
24 0
25 -5
26 0
27 691
28 0
29 -1
30 0
31 7
32 0
33 -691
34 0
35 7
36 0
37 0
38 -2
39 0
40 691
41 0
42 -14
43 0
44 3617
45 0
46 1
47 0
48 -691
49 0
50 21
51 0
52 -25319
53 0
54 43867
55 0
56 0
57 691
58 0
59 -10
60 0
61 75957
62 0
63 -438670
64 0
65 174611
66 0

List of values

[1, 1, 0, 0, 1, 0, -1, 0, 1, 0, 0, -1, 0, 1, 0, 1, 0, -1, 0, 5, 0, 0, 1, 0, -5, 0, 691, 0, -1, 0, 7, 0, -691, 0, 7, 0, 0, -2, 0, 691, 0, -14, 0, 3617, 0, 1, 0, -691, 0, 21, 0, -25319, 0, 43867, 0, 0, 691, 0, -10, 0, 75957, 0, -438670, 0, 174611, 0]