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.

A243607 T(n,k) = Number of length n+2 0..k arrays with no three elements in a row with pattern aba (with a!=b) and new values 0..k introduced in 0..k order.

Table of values

n a(n)
1 3
2 4
3 5
4 4
5 9
6 8
7 4
8 10
9 21
10 13
11 4
12 10
13 28
14 50
15 21
16 4
17 10
18 29
19 85
20 120
21 34
22 4
23 10
24 29
25 96
26 269
27 289
28 55
29 4
30 10
31 29
32 97
33 349
34 870
35 697
36 89
37 4
38 10
39 29
40 97
41 365
42 1350
43 2844
44 1682
45 144
46 4
47 10
48 29
49 97
50 366
51 1511
52 5425
53 9346
54 4060
55 233
56 4
57 10
58 29
59 97
60 366
61 1533
62 6726
63 22297
64 30792

List of values

[3, 4, 5, 4, 9, 8, 4, 10, 21, 13, 4, 10, 28, 50, 21, 4, 10, 29, 85, 120, 34, 4, 10, 29, 96, 269, 289, 55, 4, 10, 29, 97, 349, 870, 697, 89, 4, 10, 29, 97, 365, 1350, 2844, 1682, 144, 4, 10, 29, 97, 366, 1511, 5425, 9346, 4060, 233, 4, 10, 29, 97, 366, 1533, 6726, 22297, 30792]