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.

A215175 a(2*n) = A214297(n), a(2*n+1) = A000290(n).

Table of values

n a(n)
0 -1
1 0
2 0
3 1
4 -3
5 4
6 2
7 9
8 3
9 16
10 6
11 25
12 5
13 36
14 12
15 49
16 15
17 64
18 20
19 81
20 21
21 100
22 30
23 121
24 35
25 144
26 42
27 169
28 45
29 196
30 56
31 225
32 63
33 256
34 72
35 289
36 77
37 324
38 90
39 361
40 99
41 400
42 110
43 441
44 117
45 484
46 132
47 529
48 143
49 576
50 156
51 625
52 165
53 676
54 182
55 729

List of values

[-1, 0, 0, 1, -3, 4, 2, 9, 3, 16, 6, 25, 5, 36, 12, 49, 15, 64, 20, 81, 21, 100, 30, 121, 35, 144, 42, 169, 45, 196, 56, 225, 63, 256, 72, 289, 77, 324, 90, 361, 99, 400, 110, 441, 117, 484, 132, 529, 143, 576, 156, 625, 165, 676, 182, 729]