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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.

A250112 Number of symmetric primitive Lucas strings of length n.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 10
6 12
7 28
8 40
9 54
10 90
11 132
12 180
13 260
14 392
15 450
16 752
17 918
18 1404
19 1672
20 2600
21 2898
22 4818
23 5336
24 8424
25 9350
26 15288
27 16254
28 26656
29 28594
30 46530
31 49476
32 80928
33 84810
34 140250
35 146090
36 239760
37 250268
38 412528
39 426036
40 702480
41 726110
42 1196244
43 1232208

List of values

[1, 2, 3, 4, 10, 12, 28, 40, 54, 90, 132, 180, 260, 392, 450, 752, 918, 1404, 1672, 2600, 2898, 4818, 5336, 8424, 9350, 15288, 16254, 26656, 28594, 46530, 49476, 80928, 84810, 140250, 146090, 239760, 250268, 412528, 426036, 702480, 726110, 1196244, 1232208]

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

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