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.

A302971 Triangle read by rows: T(n,k) is the numerator of R(n,k) defined implicitly by the identity Sum_{i=0..l-1} Sum_{j=0..m} R(m,j)*(l-i)^j*i^j = l^(2*m+1) holding for all l,m >= 0.

Table of values

n a(n)
0 1
1 1
2 6
3 1
4 0
5 30
6 1
7 -14
8 0
9 140
10 1
11 -120
12 0
13 0
14 630
15 1
16 -1386
17 660
18 0
19 0
20 2772
21 1
22 -21840
23 18018
24 0
25 0
26 0
27 12012
28 1
29 -450054
30 491400
31 -60060
32 0
33 0
34 0
35 51480
36 1
37 -11880960
38 15506040
39 -3712800
40 0
41 0
42 0
43 0
44 218790
45 1
46 -394788954
47 581981400
48 -196409840
49 8817900
50 0
51 0
52 0
53 0
54 923780
55 1
56 -16172552880
57 26003271294
58 -10863652800
59 1031151660
60 0
61 0
62 0
63 0
64 0
65 3879876

List of values

[1, 1, 6, 1, 0, 30, 1, -14, 0, 140, 1, -120, 0, 0, 630, 1, -1386, 660, 0, 0, 2772, 1, -21840, 18018, 0, 0, 0, 12012, 1, -450054, 491400, -60060, 0, 0, 0, 51480, 1, -11880960, 15506040, -3712800, 0, 0, 0, 0, 218790, 1, -394788954, 581981400, -196409840, 8817900, 0, 0, 0, 0, 923780, 1, -16172552880, 26003271294, -10863652800, 1031151660, 0, 0, 0, 0, 0, 3879876]