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.

A346083 Triangle, read by rows, defined by recurrence: T(n,k) = T(n-1,k-1) + (-1)^k * (2 * k + 1) * T(n-1,k) for 0 < k < n with initial values T(n,0) = T(n,n) = 1 for n >= 0 and T(i,j) = 0 if j < 0 or j > i.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 -2
5 1
6 1
7 7
8 3
9 1
10 1
11 -20
12 22
13 -4
14 1
15 1
16 61
17 90
18 50
19 5
20 1
21 1
22 -182
23 511
24 -260
25 95
26 -6
27 1
28 1
29 547
30 2373
31 2331
32 595
33 161
34 7
35 1
36 1
37 -1640
38 12412
39 -13944
40 7686
41 -1176
42 252
43 -8
44 1
45 1
46 4921
47 60420
48 110020
49 55230
50 20622
51 2100
52 372
53 9
54 1
55 1
56 -14762
57 307021
58 -709720
59 607090
60 -171612
61 47922
62 -3480
63 525
64 -10
65 1

List of values

[1, 1, 1, 1, -2, 1, 1, 7, 3, 1, 1, -20, 22, -4, 1, 1, 61, 90, 50, 5, 1, 1, -182, 511, -260, 95, -6, 1, 1, 547, 2373, 2331, 595, 161, 7, 1, 1, -1640, 12412, -13944, 7686, -1176, 252, -8, 1, 1, 4921, 60420, 110020, 55230, 20622, 2100, 372, 9, 1, 1, -14762, 307021, -709720, 607090, -171612, 47922, -3480, 525, -10, 1]