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.

A207620 Triangle of coefficients of polynomials u(n,x) jointly generated with A207621; see the Formula section.

Table of values

n a(n)
1 1
2 2
3 4
4 2
5 7
6 8
7 2
8 11
9 21
10 12
11 2
12 16
13 45
14 43
15 16
16 2
17 22
18 85
19 119
20 73
21 20
22 2
23 29
24 147
25 280
26 249
27 111
28 24
29 2
30 37
31 238
32 588
33 705
34 451
35 157
36 28
37 2
38 46
39 366
40 1134
41 1749
42 1496
43 741
44 211
45 32
46 2
47 56
48 540
49 2046
50 3927
51 4290
52 2821
53 1135
54 273
55 36
56 2
57 67
58 770
59 3498

List of values

[1, 2, 4, 2, 7, 8, 2, 11, 21, 12, 2, 16, 45, 43, 16, 2, 22, 85, 119, 73, 20, 2, 29, 147, 280, 249, 111, 24, 2, 37, 238, 588, 705, 451, 157, 28, 2, 46, 366, 1134, 1749, 1496, 741, 211, 32, 2, 56, 540, 2046, 3927, 4290, 2821, 1135, 273, 36, 2, 67, 770, 3498]