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.

A306547 Triangle read by rows, defined by Riordan's general Eulerian recursion: T(n, k) = (k+3)*T(n-1, k) + (n-k-2) * T(n-1, k-1) with T(n,1) = 1, T(n,n) = (-2)^(n-1).

Table of values

n a(n)
1 1
2 1
3 -2
4 1
5 -11
6 4
7 1
8 -55
9 35
10 -8
11 1
12 -274
13 210
14 -91
15 16
16 1
17 -1368
18 986
19 -637
20 219
21 -32
22 1
23 -6837
24 3180
25 -3473
26 1752
27 -507
28 64
29 1
30 -34181
31 -1431
32 -17951
33 10543
34 -4563
35 1147
36 -128
37 1
38 -170900
39 -145310
40 -129950
41 48442
42 -30524
43 11470
44 -2555
45 256
46 1
47 -854494
48 -1726360
49 -1490890
50 -2314
51 -177832
52 84176
53 -28105
54 5627
55 -512

List of values

[1, 1, -2, 1, -11, 4, 1, -55, 35, -8, 1, -274, 210, -91, 16, 1, -1368, 986, -637, 219, -32, 1, -6837, 3180, -3473, 1752, -507, 64, 1, -34181, -1431, -17951, 10543, -4563, 1147, -128, 1, -170900, -145310, -129950, 48442, -30524, 11470, -2555, 256, 1, -854494, -1726360, -1490890, -2314, -177832, 84176, -28105, 5627, -512]