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.

A209688 Triangle of coefficients of polynomials v(n,x) jointly generated with A115241; see the Formula section.

Table of values

n a(n)
1 1
2 3
3 4
4 2
5 5
6 5
7 2
8 6
9 9
10 7
11 2
12 7
13 14
14 16
15 9
16 2
17 8
18 20
19 30
20 25
21 11
22 2
23 9
24 27
25 50
26 55
27 36
28 13
29 2
30 10
31 35
32 77
33 105
34 91
35 49
36 15
37 2
38 11
39 44
40 112
41 182
42 196
43 140
44 64
45 17
46 2
47 12
48 54
49 156
50 294
51 378
52 336
53 204
54 81
55 19
56 2
57 13
58 65
59 210
60 450
61 672
62 714
63 540
64 285
65 100
66 21
67 2

List of values

[1, 3, 4, 2, 5, 5, 2, 6, 9, 7, 2, 7, 14, 16, 9, 2, 8, 20, 30, 25, 11, 2, 9, 27, 50, 55, 36, 13, 2, 10, 35, 77, 105, 91, 49, 15, 2, 11, 44, 112, 182, 196, 140, 64, 17, 2, 12, 54, 156, 294, 378, 336, 204, 81, 19, 2, 13, 65, 210, 450, 672, 714, 540, 285, 100, 21, 2]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.