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.

A269467 T(n,k)=Number of length-n 0..k arrays with no repeated value equal to the previous repeated value.

Table of values

n a(n)
1 2
2 3
3 4
4 4
5 9
6 6
7 5
8 16
9 24
10 10
11 6
12 25
13 60
14 66
15 14
16 7
17 36
18 120
19 228
20 174
21 22
22 8
23 49
24 210
25 580
26 852
27 462
28 30
29 9
30 64
31 336
32 1230
33 2780
34 3180
35 1206
36 46
37 10
38 81
39 504
40 2310
41 7170
42 13300
43 11796
44 3150
45 62
46 11
47 100
48 720
49 3976
50 15834
51 41730
52 63420
53 43644
54 8166
55 94
56 12
57 121

List of values

[2, 3, 4, 4, 9, 6, 5, 16, 24, 10, 6, 25, 60, 66, 14, 7, 36, 120, 228, 174, 22, 8, 49, 210, 580, 852, 462, 30, 9, 64, 336, 1230, 2780, 3180, 1206, 46, 10, 81, 504, 2310, 7170, 13300, 11796, 3150, 62, 11, 100, 720, 3976, 15834, 41730, 63420, 43644, 8166, 94, 12, 121]