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.

A209767 Triangle of coefficients of polynomials u(n,x) jointly generated with A209768; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 6
6 5
7 3
8 12
9 20
10 12
11 4
12 21
13 52
14 63
15 29
16 5
17 33
18 109
19 199
20 187
21 70
22 6
23 48
24 200
25 490
26 700
27 536
28 169
29 7
30 66
31 334
32 1032
33 1988
34 2322
35 1498
36 408
37 8
38 87
39 520
40 1948
41 4742
42 7488
43 7378
44 4109
45 985
46 9
47 111
48 767
49 3388
50 10004
51 19992
52 26664
53 22685
54 11109

List of values

[1, 1, 2, 2, 6, 5, 3, 12, 20, 12, 4, 21, 52, 63, 29, 5, 33, 109, 199, 187, 70, 6, 48, 200, 490, 700, 536, 169, 7, 66, 334, 1032, 1988, 2322, 1498, 408, 8, 87, 520, 1948, 4742, 7488, 7378, 4109, 985, 9, 111, 767, 3388, 10004, 19992, 26664, 22685, 11109]