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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.

A209350 Number of initially rising meander words, where each letter of the cyclic n-ary alphabet occurs twice.

Table of values

n a(n)
0 1
1 0
2 1
3 5
4 9
5 11
6 16
7 19
8 25
9 29
10 36
11 41
12 49
13 55
14 64
15 71
16 81
17 89
18 100
19 109
20 121
21 131
22 144
23 155
24 169
25 181
26 196
27 209
28 225
29 239
30 256
31 271
32 289
33 305
34 324
35 341
36 361
37 379
38 400
39 419
40 441
41 461
42 484
43 505
44 529
45 551
46 576
47 599
48 625
49 649
50 676
51 701
52 729
53 755
54 784
55 811
56 841

List of values

[1, 0, 1, 5, 9, 11, 16, 19, 25, 29, 36, 41, 49, 55, 64, 71, 81, 89, 100, 109, 121, 131, 144, 155, 169, 181, 196, 209, 225, 239, 256, 271, 289, 305, 324, 341, 361, 379, 400, 419, 441, 461, 484, 505, 529, 551, 576, 599, 625, 649, 676, 701, 729, 755, 784, 811, 841]

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

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