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.

A210213 Triangle of coefficients of polynomials u(n,x) jointly generated with A210214; see the Formula section.

Table of values

n a(n)
1 1
2 2
3 1
4 4
5 3
6 1
7 7
8 9
9 4
10 1
11 12
12 21
13 16
14 5
15 1
16 20
17 46
18 46
19 25
20 6
21 1
22 33
23 94
24 121
25 85
26 36
27 7
28 1
29 54
30 185
31 289
32 260
33 141
34 49
35 8
36 1
37 88
38 353
39 653
40 708
41 491
42 217
43 64
44 9
45 1
46 143
47 659
48 1409
49 1800
50 1499
51 847
52 316
53 81
54 10
55 1
56 232
57 1209
58 2939
59 4320
60 4229
61 2863
62 1366

List of values

[1, 2, 1, 4, 3, 1, 7, 9, 4, 1, 12, 21, 16, 5, 1, 20, 46, 46, 25, 6, 1, 33, 94, 121, 85, 36, 7, 1, 54, 185, 289, 260, 141, 49, 8, 1, 88, 353, 653, 708, 491, 217, 64, 9, 1, 143, 659, 1409, 1800, 1499, 847, 316, 81, 10, 1, 232, 1209, 2939, 4320, 4229, 2863, 1366]