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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.

A099887 XOR difference triangle of the powers of 3, read by rows.

Table of values

n a(n)
0 1
1 3
2 2
3 9
4 10
5 8
6 27
7 18
8 24
9 16
10 81
11 74
12 88
13 64
14 80
15 243
16 162
17 232
18 176
19 240
20 160
21 729
22 554
23 648
24 608
25 720
26 544
27 640
28 2187
29 2642
30 2168
31 2800
32 2192
33 2624
34 2144
35 2784
36 6561
37 4394
38 7032
39 4864
40 6640
41 4448
42 6944
43 4928
44 6560
45 19683
46 21826
47 17512
48 24336
49 19472

List of values

[1, 3, 2, 9, 10, 8, 27, 18, 24, 16, 81, 74, 88, 64, 80, 243, 162, 232, 176, 240, 160, 729, 554, 648, 608, 720, 544, 640, 2187, 2642, 2168, 2800, 2192, 2624, 2144, 2784, 6561, 4394, 7032, 4864, 6640, 4448, 6944, 4928, 6560, 19683, 21826, 17512, 24336, 19472]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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