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.

A209133 Triangle of coefficients of polynomials u(n,x) jointly generated with A209134; see the Formula section.

Table of values

n a(n)
1 1
2 2
3 1
4 2
5 5
6 4
7 2
8 9
9 18
10 10
11 2
12 13
13 40
14 56
15 28
16 2
17 17
18 70
19 154
20 176
21 76
22 2
23 21
24 108
25 320
26 564
27 540
28 208
29 2
30 25
31 154
32 570
33 1344
34 1976
35 1640
36 568
37 2
38 29
39 208
40 920
41 2700
42 5304
43 6720
44 4928
45 1552
46 2
47 33
48 270
49 1386
50 4848
51 11844
52 20016
53 22320
54 14688
55 4240

List of values

[1, 2, 1, 2, 5, 4, 2, 9, 18, 10, 2, 13, 40, 56, 28, 2, 17, 70, 154, 176, 76, 2, 21, 108, 320, 564, 540, 208, 2, 25, 154, 570, 1344, 1976, 1640, 568, 2, 29, 208, 920, 2700, 5304, 6720, 4928, 1552, 2, 33, 270, 1386, 4848, 11844, 20016, 22320, 14688, 4240]