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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.

A208909 Triangle of coefficients of polynomials u(n,x) jointly generated with A208930; 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 10
9 20
10 16
11 1
12 14
13 42
14 68
15 44
16 1
17 18
18 72
19 172
20 220
21 120
22 1
23 22
24 110
25 344
26 648
27 696
28 328
29 1
30 26
31 156
32 600
33 1480
34 2336
35 2160
36 896
37 1
38 30
39 210
40 956
41 2900
42 5984
43 8128
44 6608
45 2448
46 1
47 34
48 272
49 1428
50 5124
51 12984
52 23056
53 27536
54 19984

List of values

[1, 1, 2, 1, 6, 6, 1, 10, 20, 16, 1, 14, 42, 68, 44, 1, 18, 72, 172, 220, 120, 1, 22, 110, 344, 648, 696, 328, 1, 26, 156, 600, 1480, 2336, 2160, 896, 1, 30, 210, 956, 2900, 5984, 8128, 6608, 2448, 1, 34, 272, 1428, 5124, 12984, 23056, 27536, 19984]

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

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