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.

A247936 Riordan array ((1-2x)/(1-3x), 2x).

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 2
5 4
6 9
7 6
8 4
9 8
10 27
11 18
12 12
13 8
14 16
15 81
16 54
17 36
18 24
19 16
20 32
21 243
22 162
23 108
24 72
25 48
26 32
27 64
28 729
29 486
30 324
31 216
32 144
33 96
34 64
35 128
36 2187
37 1458
38 972
39 648
40 432
41 288
42 192
43 128
44 256
45 6561
46 4374
47 2916
48 1944
49 1296
50 864
51 576
52 384
53 256
54 512
55 19683
56 13122

List of values

[1, 1, 2, 3, 2, 4, 9, 6, 4, 8, 27, 18, 12, 8, 16, 81, 54, 36, 24, 16, 32, 243, 162, 108, 72, 48, 32, 64, 729, 486, 324, 216, 144, 96, 64, 128, 2187, 1458, 972, 648, 432, 288, 192, 128, 256, 6561, 4374, 2916, 1944, 1296, 864, 576, 384, 256, 512, 19683, 13122]