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.

A209831 Triangle of coefficients of polynomials v(n,x) jointly generated with A209830; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 3
4 1
5 5
6 8
7 1
8 8
9 20
10 21
11 1
12 10
13 41
14 71
15 55
16 1
17 13
18 65
19 176
20 235
21 144
22 1
23 15
24 99
25 338
26 684
27 744
28 377
29 1
30 18
31 135
32 590
33 1536
34 2490
35 2285
36 987
37 1
38 20
39 182
40 926
41 3031
42 6382
43 8651
44 6865
45 2584
46 1
47 23
48 230
49 1388
50 5359
51 14065
52 24875
53 29020
54 20284
55 6765

List of values

[1, 1, 3, 1, 5, 8, 1, 8, 20, 21, 1, 10, 41, 71, 55, 1, 13, 65, 176, 235, 144, 1, 15, 99, 338, 684, 744, 377, 1, 18, 135, 590, 1536, 2490, 2285, 987, 1, 20, 182, 926, 3031, 6382, 8651, 6865, 2584, 1, 23, 230, 1388, 5359, 14065, 24875, 29020, 20284, 6765]