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.

A287704 Triangle read by rows, denominators of T(n,k) = (-1)^(n+k)*binomial(n-1,k)* Bernoulli(n+k)/ (n+k) for n>=1, 0<=k<=n-1.

Table of values

n a(n)
1 2
2 12
3 1
4 1
5 60
6 1
7 120
8 1
9 84
10 1
11 1
12 63
13 1
14 60
15 1
16 252
17 1
18 24
19 1
20 132
21 1
22 1
23 40
24 1
25 33
26 1
27 5460
28 1
29 240
30 1
31 44
32 1
33 936
34 1
35 12
36 1
37 1
38 33
39 1
40 585
41 1
42 3
43 1
44 1020
45 1
46 132
47 1
48 910
49 1
50 2
51 1
52 680
53 1
54 1596
55 1
56 1
57 3276
58 1
59 1
60 1
61 680
62 1
63 1197
64 1
65 660
66 1

List of values

[2, 12, 1, 1, 60, 1, 120, 1, 84, 1, 1, 63, 1, 60, 1, 252, 1, 24, 1, 132, 1, 1, 40, 1, 33, 1, 5460, 1, 240, 1, 44, 1, 936, 1, 12, 1, 1, 33, 1, 585, 1, 3, 1, 1020, 1, 132, 1, 910, 1, 2, 1, 680, 1, 1596, 1, 1, 3276, 1, 1, 1, 680, 1, 1197, 1, 660, 1]