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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.

A208919 Triangle of coefficients of polynomials u(n,x) jointly generated with A208920; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 6
6 6
7 1
8 12
9 20
10 14
11 1
12 20
13 44
14 66
15 38
16 1
17 30
18 80
19 190
20 208
21 94
22 1
23 42
24 130
25 430
26 678
27 622
28 246
29 1
30 56
31 196
32 840
33 1708
34 2380
35 1852
36 622
37 1
38 72
39 280
40 1484
41 3668
42 6888
43 7928
44 5338
45 1606
46 1
47 90
48 384
49 2436
50 7056
51 16716
52 25344
53 25650
54 15336

List of values

[1, 1, 2, 1, 6, 6, 1, 12, 20, 14, 1, 20, 44, 66, 38, 1, 30, 80, 190, 208, 94, 1, 42, 130, 430, 678, 622, 246, 1, 56, 196, 840, 1708, 2380, 1852, 622, 1, 72, 280, 1484, 3668, 6888, 7928, 5338, 1606, 1, 90, 384, 2436, 7056, 16716, 25344, 25650, 15336]

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

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