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.

A268457 T(n,k)=Number of length-n 0..k arrays with no adjacent pair x,x+1 followed at any distance by x+1,x.

Table of values

n a(n)
1 2
2 3
3 4
4 4
5 9
6 7
7 5
8 16
9 25
10 11
11 6
12 25
13 61
14 67
15 16
16 7
17 36
18 121
19 229
20 176
21 22
22 8
23 49
24 211
25 581
26 852
27 456
28 29
29 9
30 64
31 337
32 1231
33 2776
34 3146
35 1169
36 37
37 10
38 81
39 505
40 2311
41 7160
42 13204
43 11536
44 2971
45 46
46 11
47 100
48 721
49 3977
50 15816
51 41526
52 62535
53 42032
54 7496
55 56
56 12
57 121

List of values

[2, 3, 4, 4, 9, 7, 5, 16, 25, 11, 6, 25, 61, 67, 16, 7, 36, 121, 229, 176, 22, 8, 49, 211, 581, 852, 456, 29, 9, 64, 337, 1231, 2776, 3146, 1169, 37, 10, 81, 505, 2311, 7160, 13204, 11536, 2971, 46, 11, 100, 721, 3977, 15816, 41526, 62535, 42032, 7496, 56, 12, 121]