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.

A304252 Triangle read by rows: T(0,0) = 1; T(n,k) = T(n-1,k) + 6*T(n-2,k-1) for k = 0..floor(n/2); T(n,k)=0 for n or k < 0.

Table of values

n a(n)
0 1
1 1
2 1
3 6
4 1
5 12
6 1
7 18
8 36
9 1
10 24
11 108
12 1
13 30
14 216
15 216
16 1
17 36
18 360
19 864
20 1
21 42
22 540
23 2160
24 1296
25 1
26 48
27 756
28 4320
29 6480
30 1
31 54
32 1008
33 7560
34 19440
35 7776
36 1
37 60
38 1296
39 12096
40 45360
41 46656
42 1
43 66
44 1620
45 18144
46 90720
47 163296
48 46656
49 1
50 72
51 1980
52 25920
53 163296
54 435456
55 326592
56 1
57 78
58 2376
59 35640

List of values

[1, 1, 1, 6, 1, 12, 1, 18, 36, 1, 24, 108, 1, 30, 216, 216, 1, 36, 360, 864, 1, 42, 540, 2160, 1296, 1, 48, 756, 4320, 6480, 1, 54, 1008, 7560, 19440, 7776, 1, 60, 1296, 12096, 45360, 46656, 1, 66, 1620, 18144, 90720, 163296, 46656, 1, 72, 1980, 25920, 163296, 435456, 326592, 1, 78, 2376, 35640]