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.

A153285 a(1)=1; for n > 1, a(n) = n^2 + Sum_{j=1..n-1} (-1)^j*a(j).

Table of values

n a(n)
1 1
2 3
3 11
4 7
5 23
6 11
7 35
8 15
9 47
10 19
11 59
12 23
13 71
14 27
15 83
16 31
17 95
18 35
19 107
20 39
21 119
22 43
23 131
24 47
25 143
26 51
27 155
28 55
29 167
30 59
31 179
32 63
33 191
34 67
35 203
36 71
37 215
38 75
39 227
40 79
41 239
42 83
43 251
44 87
45 263
46 91
47 275
48 95
49 287
50 99
51 299
52 103
53 311
54 107
55 323
56 111
57 335
58 115
59 347
60 119
61 359

List of values

[1, 3, 11, 7, 23, 11, 35, 15, 47, 19, 59, 23, 71, 27, 83, 31, 95, 35, 107, 39, 119, 43, 131, 47, 143, 51, 155, 55, 167, 59, 179, 63, 191, 67, 203, 71, 215, 75, 227, 79, 239, 83, 251, 87, 263, 91, 275, 95, 287, 99, 299, 103, 311, 107, 323, 111, 335, 115, 347, 119, 359]