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.

A298818 a(n) is the binary XOR of all n-bit triangular numbers.

Table of values

n a(n)
1 1
2 3
3 6
4 5
5 9
6 62
7 70
8 204
9 348
10 586
11 1770
12 3582
13 6974
14 9046
15 22486
16 12225
17 54977
18 97140
19 201076
20 34728
21 347048
22 1031920
23 2250480
24 10857648
25 24157360
26 40826080
27 112612576
28 21772545
29 130349313
30 1060428174
31 1126848910
32 1106260993
33 2017932289
34 3773334644
35 13412500596
36 6378289192
37 37614057512

List of values

[1, 3, 6, 5, 9, 62, 70, 204, 348, 586, 1770, 3582, 6974, 9046, 22486, 12225, 54977, 97140, 201076, 34728, 347048, 1031920, 2250480, 10857648, 24157360, 40826080, 112612576, 21772545, 130349313, 1060428174, 1126848910, 1106260993, 2017932289, 3773334644, 13412500596, 6378289192, 37614057512]